131507664168 has 32 divisors (see below), whose sum is σ = 328782130560. Its totient is φ = 43834158720.

The previous prime is 131507664161. The next prime is 131507664191. The reversal of 131507664168 is 861466705131.

It is a super-2 number, since 2×131507664168² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131507664161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610428 + ... + 797268.

It is an arithmetic number, because the mean of its divisors is an integer number (10274441580).

Almost surely, 2^131507664168 is an apocalyptic number.

It is an amenable number.

131507664168 is an abundant number, since it is smaller than the sum of its proper divisors (197274466392).

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

131507664168 is a wasteful number, since it uses less digits than its factorization.

131507664168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216177 (or 216173 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 131507664168 in words is "one hundred thirty-one billion, five hundred seven million, six hundred sixty-four thousand, one hundred sixty-eight".