12164256631 has 2 divisors, whose sum is σ = 12164256632. Its totient is φ = 12164256630.

The previous prime is 12164256617. The next prime is 12164256661. The reversal of 12164256631 is 13665246121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12164256631 is a prime.

It is a super-2 number, since 2×12164256631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12164256661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6082128315 + 6082128316.

It is an arithmetic number, because the mean of its divisors is an integer number (6082128316).

Almost surely, 2^12164256631 is an apocalyptic number.

12164256631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12164256631 is an equidigital number, since it uses as much as digits as its factorization.

12164256631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The spelling of 12164256631 in words is "twelve billion, one hundred sixty-four million, two hundred fifty-six thousand, six hundred thirty-one".