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15680215152 = 24327314112239
BaseRepresentation
bin11101001101001110…
…10001100001110000
31111110210002110110100
432212213101201300
5224103113341102
611111533232400
71063366425660
oct164647214160
944423073410
1015680215152
1167170887a8
123057332700
13162b74bc24
14a8a6cc1a0
1561b8c9a1c
hex3a69d1870

15680215152 has 240 divisors, whose sum is σ = 53036605440. Its totient is φ = 4229452800.

The previous prime is 15680215141. The next prime is 15680215189. The reversal of 15680215152 is 25151208651.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1275049 + ... + 1287287.

It is an arithmetic number, because the mean of its divisors is an integer number (220985856).

Almost surely, 215680215152 is an apocalyptic number.

15680215152 is a gapful number since it is divisible by the number (12) 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 15680215152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26518302720).

15680215152 is an abundant number, since it is smaller than the sum of its proper divisors (37356390288).

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

15680215152 is a wasteful number, since it uses less digits than its factorization.

15680215152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12332 (or 12323 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 36.

The spelling of 15680215152 in words is "fifteen billion, six hundred eighty million, two hundred fifteen thousand, one hundred fifty-two".