12601400656 has 40 divisors (see below), whose sum is σ = 26301379104. Its totient is φ = 5814245760.

The previous prime is 12601400639. The next prime is 12601400677. The reversal of 12601400656 is 65600410621.

12601400656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868695 + ... + 883081.

Almost surely, 2^12601400656 is an apocalyptic number.

12601400656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12601400656 is an abundant number, since it is smaller than the sum of its proper divisors (13699978448).

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

12601400656 is a wasteful number, since it uses less digits than its factorization.

12601400656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18619 (or 18613 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 12601400656 in words is "twelve billion, six hundred one million, four hundred thousand, six hundred fifty-six".