131635578996 has 36 divisors (see below), whose sum is σ = 332784354084. Its totient is φ = 43873401600.

The previous prime is 131635578979. The next prime is 131635579007. The reversal of 131635578996 is 699875536131.

131635578996 is a `hidden beast` number, since 13 + 1 + 63 + 557 + 8 + 9 + 9 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 74466768996 + 57168810000 = 272886^2 + 239100^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×131635578996² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105516 + ... + 523836.

Almost surely, 2^131635578996 is an apocalyptic number.

It is an amenable number.

131635578996 is an abundant number, since it is smaller than the sum of its proper divisors (201148775088).

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

131635578996 is a wasteful number, since it uses less digits than its factorization.

131635578996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427072 (or 427067 counting only the distinct ones).

The product of its digits is 36741600, while the sum is 63.

The spelling of 131635578996 in words is "one hundred thirty-one billion, six hundred thirty-five million, five hundred seventy-eight thousand, nine hundred ninety-six".