12956022836 has 12 divisors (see below), whose sum is σ = 22790518212. Its totient is φ = 6444446208.

The previous prime is 12956022809. The next prime is 12956022869. The reversal of 12956022836 is 63822065921.

It can be written as a sum of positive squares in 2 ways, for example, as 6948222736 + 6007800100 = 83356^2 + 77510^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8390435 + ... + 8391978.

It is an arithmetic number, because the mean of its divisors is an integer number (1899209851).

Almost surely, 2^12956022836 is an apocalyptic number.

It is an amenable number.

12956022836 is a deficient number, since it is larger than the sum of its proper divisors (9834495376).

12956022836 is a wasteful number, since it uses less digits than its factorization.

12956022836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16782610 (or 16782608 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 12956022836 in words is "twelve billion, nine hundred fifty-six million, twenty-two thousand, eight hundred thirty-six".