12254657656 has 8 divisors (see below), whose sum is σ = 22977483120. Its totient is φ = 6127328824.

The previous prime is 12254657651. The next prime is 12254657683. The reversal of 12254657656 is 65675645221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12254657651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765916096 + ... + 765916111.

It is an arithmetic number, because the mean of its divisors is an integer number (2872185390).

Almost surely, 2^12254657656 is an apocalyptic number.

It is an amenable number.

12254657656 is a deficient number, since it is larger than the sum of its proper divisors (10722825464).

12254657656 is a wasteful number, since it uses less digits than its factorization.

12254657656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531832213 (or 1531832209 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 49.

The spelling of 12254657656 in words is "twelve billion, two hundred fifty-four million, six hundred fifty-seven thousand, six hundred fifty-six".