131438124117905 has 16 divisors (see below), whose sum is σ = 172064919999168. Its totient is φ = 95591103768000.

The previous prime is 131438124117899. The next prime is 131438124117913. The reversal of 131438124117905 is 509711421834131.

It is not a de Polignac number, because 131438124117905 - 2⁸ = 131438124117649 is a prime.

It is a Duffinian 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, 18545135 + ... + 24633275.

It is an arithmetic number, because the mean of its divisors is an integer number (10754057499948).

Almost surely, 2^{131438124117905} is an apocalyptic number.

It is an amenable number.

131438124117905 is a deficient number, since it is larger than the sum of its proper divisors (40626795881263).

131438124117905 is a wasteful number, since it uses less digits than its factorization.

131438124117905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480688.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 131438124117905 in words is "one hundred thirty-one trillion, four hundred thirty-eight billion, one hundred twenty-four million, one hundred seventeen thousand, nine hundred five".