131956625679 has 4 divisors (see below), whose sum is σ = 175942167576. Its totient is φ = 87971083784.

The previous prime is 131956625623. The next prime is 131956625681. The reversal of 131956625679 is 976526659131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131956625679 - 2⁹ = 131956625167 is a prime.

It is a super-2 number, since 2×131956625679² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131956621679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21992770944 + ... + 21992770949.

It is an arithmetic number, because the mean of its divisors is an integer number (43985541894).

Almost surely, 2^131956625679 is an apocalyptic number.

131956625679 is a deficient number, since it is larger than the sum of its proper divisors (43985541897).

131956625679 is an equidigital number, since it uses as much as digits as its factorization.

131956625679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43985541896.

The product of its digits is 18370800, while the sum is 60.

The spelling of 131956625679 in words is "one hundred thirty-one billion, nine hundred fifty-six million, six hundred twenty-five thousand, six hundred seventy-nine".