12730826512956 has 48 divisors (see below), whose sum is σ = 29724757425440. Its totient is φ = 4240824456960.

The previous prime is 12730826512949. The next prime is 12730826513071. The reversal of 12730826512956 is 65921562803721.

It is a junction number, because it is equal to n+sod(n) for n = 12730826512896 and 12730826512905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161558286 + ... + 161637066.

Almost surely, 2^{12730826512956} is an apocalyptic number.

It is an amenable number.

12730826512956 is an abundant number, since it is smaller than the sum of its proper divisors (16993930912484).

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

12730826512956 is a wasteful number, since it uses less digits than its factorization.

12730826512956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87454 (or 87452 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 12730826512956 in words is "twelve trillion, seven hundred thirty billion, eight hundred twenty-six million, five hundred twelve thousand, nine hundred fifty-six".