131642534645 has 16 divisors (see below), whose sum is σ = 166432728000. Its totient is φ = 99682731648.

The previous prime is 131642534629. The next prime is 131642534719. The reversal of 131642534645 is 546435246131.

It is a cyclic number.

It is not a de Polignac number, because 131642534645 - 2⁴ = 131642534629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131642534596 and 131642534605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506435 + ... + 720944.

It is an arithmetic number, because the mean of its divisors is an integer number (10402045500).

Almost surely, 2^131642534645 is an apocalyptic number.

It is an amenable number.

131642534645 is a deficient number, since it is larger than the sum of its proper divisors (34790193355).

131642534645 is a wasteful number, since it uses less digits than its factorization.

131642534645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228532.

The product of its digits is 1036800, while the sum is 44.

The spelling of 131642534645 in words is "one hundred thirty-one billion, six hundred forty-two million, five hundred thirty-four thousand, six hundred forty-five".