12840902056 has 32 divisors (see below), whose sum is σ = 24618297600. Its totient is φ = 6277602240.

The previous prime is 12840902021. The next prime is 12840902071. The reversal of 12840902056 is 65020904821.

It is a super-2 number, since 2×12840902056² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33535 + ... + 163726.

It is an arithmetic number, because the mean of its divisors is an integer number (769321800).

Almost surely, 2^12840902056 is an apocalyptic number.

It is an amenable number.

12840902056 is a deficient number, since it is larger than the sum of its proper divisors (11777395544).

12840902056 is a wasteful number, since it uses less digits than its factorization.

12840902056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197449 (or 197445 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 12840902056 in words is "twelve billion, eight hundred forty million, nine hundred two thousand, fifty-six".