131583864645 has 24 divisors (see below), whose sum is σ = 235436078592. Its totient is φ = 67914252000.

The previous prime is 131583864613. The next prime is 131583864653. The reversal of 131583864645 is 546468385131.

It is a happy number.

131583864645 is a `hidden beast` number, since 13 + 1 + 583 + 8 + 6 + 4 + 6 + 45 = 666.

It is not a de Polignac number, because 131583864645 - 2⁵ = 131583864613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131583864591 and 131583864600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47161281 + ... + 47164070.

It is an arithmetic number, because the mean of its divisors is an integer number (9809836608).

Almost surely, 2^131583864645 is an apocalyptic number.

131583864645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131583864645 is a deficient number, since it is larger than the sum of its proper divisors (103852213947).

131583864645 is a wasteful number, since it uses less digits than its factorization.

131583864645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94325393 (or 94325390 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The spelling of 131583864645 in words is "one hundred thirty-one billion, five hundred eighty-three million, eight hundred sixty-four thousand, six hundred forty-five".