131621739156 has 48 divisors (see below), whose sum is σ = 345561081600. Its totient is φ = 43318544256.

The previous prime is 131621739121. The next prime is 131621739157. The reversal of 131621739156 is 651937126131.

131621739156 is a `hidden beast` number, since 1 + 3 + 1 + 621 + 7 + 3 + 9 + 15 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131621739157) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7704885 + ... + 7721948.

It is an arithmetic number, because the mean of its divisors is an integer number (7199189200).

Almost surely, 2^131621739156 is an apocalyptic number.

It is an amenable number.

131621739156 is an abundant number, since it is smaller than the sum of its proper divisors (213939342444).

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

131621739156 is a wasteful number, since it uses less digits than its factorization.

131621739156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15426925 (or 15426917 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The spelling of 131621739156 in words is "one hundred thirty-one billion, six hundred twenty-one million, seven hundred thirty-nine thousand, one hundred fifty-six".