131185574955 has 48 divisors (see below), whose sum is σ = 240789669120. Its totient is φ = 65886260544.

The previous prime is 131185574951. The next prime is 131185574963. The reversal of 131185574955 is 559475581131.

131185574955 is a `hidden beast` number, since 1 + 3 + 1 + 18 + 5 + 574 + 9 + 55 = 666.

It is not a de Polignac number, because 131185574955 - 2² = 131185574951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131185574951) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 316597 + ... + 602166.

It is an arithmetic number, because the mean of its divisors is an integer number (5016451440).

Almost surely, 2^131185574955 is an apocalyptic number.

131185574955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131185574955 is a deficient number, since it is larger than the sum of its proper divisors (109604094165).

131185574955 is a wasteful number, since it uses less digits than its factorization.

131185574955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918960 (or 918957 counting only the distinct ones).

The product of its digits is 3780000, while the sum is 54.

The spelling of 131185574955 in words is "one hundred thirty-one billion, one hundred eighty-five million, five hundred seventy-four thousand, nine hundred fifty-five".