12656144031 has 16 divisors (see below), whose sum is σ = 17212172160. Its totient is φ = 8269751520.

The previous prime is 12656144023. The next prime is 12656144051. The reversal of 12656144031 is 13044165621.

It is not a de Polignac number, because 12656144031 - 2³ = 12656144023 is a prime.

It is a super-3 number, since 3×12656144031³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 12656143983 and 12656144001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12656144021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70401 + ... + 173978.

It is an arithmetic number, because the mean of its divisors is an integer number (1075760760).

Almost surely, 2^12656144031 is an apocalyptic number.

12656144031 is a deficient number, since it is larger than the sum of its proper divisors (4556028129).

12656144031 is a wasteful number, since it uses less digits than its factorization.

12656144031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244726.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 12656144031 in words is "twelve billion, six hundred fifty-six million, one hundred forty-four thousand, thirty-one".