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50000000000 = 210511
BaseRepresentation
bin101110100100001110…
…110111010000000000
311210001120211011121212
4232210032313100000
51304400000000000
634545241305252
73420021662516
oct564416672000
9153046734555
1050000000000
111a228773055
129834a95228
13493aa6ca22
1425c47304b6
151479894c35
hexba43b7400

50000000000 has 132 divisors (see below), whose sum is σ = 124938964332. Its totient is φ = 20000000000.

The previous prime is 49999999967. The next prime is 50000000021. The reversal of 50000000000 is 5.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 7147687936 + 42852312064 = 84544^2 + 207008^2 .

It is an ABA number since it can be written as A⋅BA, here for A=5, B=100.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9999999998 + ... + 10000000002.

Almost surely, 250000000000 is an apocalyptic number.

50000000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62469482166).

50000000000 is an abundant number, since it is smaller than the sum of its proper divisors (74938964332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50000000000 is an frugal number, since it uses more digits than its factorization.

50000000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 5.

The spelling of 50000000000 in words is "fifty billion", and thus it is an aban number, an eban number, and an uban number.

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 512 625 640 800 1000 1024 1250 1280 1600 2000 2500 2560 3125 3200 4000 5000 5120 6250 6400 8000 10000 12500 12800 15625 16000 20000 25000 25600 31250 32000 40000 50000 62500 64000 78125 80000 100000 125000 128000 156250 160000 200000 250000 312500 320000 390625 400000 500000 625000 640000 781250 800000 1000000 1250000 1562500 1600000 1953125 2000000 2500000 3125000 3200000 3906250 4000000 5000000 6250000 7812500 8000000 9765625 10000000 12500000 15625000 16000000 19531250 20000000 25000000 31250000 39062500 40000000 48828125 50000000 62500000 78125000 80000000 97656250 100000000 125000000 156250000 195312500 200000000 250000000 312500000 390625000 400000000 500000000 625000000 781250000 1000000000 1250000000 1562500000 2000000000 2500000000 3125000000 5000000000 6250000000 10000000000 12500000000 25000000000 50000000000