12549269656 has 64 divisors (see below), whose sum is σ = 29934720000. Its totient is φ = 4889314080.

The previous prime is 12549269633. The next prime is 12549269671. The reversal of 12549269656 is 65696294521.

It is a junction number, because it is equal to n+sod(n) for n = 12549269597 and 12549269606.

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, 177696 + ... + 238063.

It is an arithmetic number, because the mean of its divisors is an integer number (467730000).

Almost surely, 2^12549269656 is an apocalyptic number.

It is an amenable number.

12549269656 is an abundant number, since it is smaller than the sum of its proper divisors (17385450344).

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

12549269656 is a wasteful number, since it uses less digits than its factorization.

12549269656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415797 (or 415779 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 55.

The spelling of 12549269656 in words is "twelve billion, five hundred forty-nine million, two hundred sixty-nine thousand, six hundred fifty-six".