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1000000000000 = 212512
BaseRepresentation
bin11101000110101001010…
…01010001000000000000
310112121011201102102111001
432203110221101000000
5112341000000000000
62043221010301344
7132150634516021
oct16432451210000
93477151372431
101000000000000
11356108a259a1
12141981b87854
13733b8298841
1436586446c48
151b02b76646a
hexe8d4a51000

1000000000000 has 169 divisors, whose sum is σ = 2499694822171. Its totient is φ = 400000000000.

The previous prime is 999999999989. The next prime is 1000000000039. The reversal of 1000000000000 is 1.

It is a happy number.

The square root of 1000000000000 is 1000000.

The cubic root of 1000000000000 is 10000.

It is a perfect power (a square, a cube, a biquadrate, a 6-th power, a 12-th power), and thus also a powerful number.

It can be written as a sum of positive squares in 6 ways, for example, as 565792804864 + 434207195136 = 752192^2 + 658944^2 .

It is a Harshad number since it is a multiple of its sum of digits (1).

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

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 999999999896 and 999999999905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 12 ways as a sum of consecutive naturals, for example, 199999999998 + ... + 200000000002.

Almost surely, 21000000000000 is an apocalyptic number.

1000000000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000000000000 is the 1000000-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000000000000

1000000000000 is an abundant number, since it is smaller than the sum of its proper divisors (1499694822171).

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

1000000000000 is an frugal number, since it uses more digits than its factorization.

1000000000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 1.

The spelling of 1000000000000 in words is "one trillion", and thus it is an aban number and an uban number.