131396715565538 has 8 divisors (see below), whose sum is σ = 197193473291088. Its totient is φ = 65665557801844.

The previous prime is 131396715565523. The next prime is 131396715565567. The reversal of 131396715565538 is 835565517693131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×131396715565538² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16399985456 + ... + 16399993467.

It is an arithmetic number, because the mean of its divisors is an integer number (24649184161386).

Almost surely, 2^{131396715565538} is an apocalyptic number.

131396715565538 is a deficient number, since it is larger than the sum of its proper divisors (65796757725550).

131396715565538 is a wasteful number, since it uses less digits than its factorization.

131396715565538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32799980928.

The product of its digits is 306180000, while the sum is 68.

The spelling of 131396715565538 in words is "one hundred thirty-one trillion, three hundred ninety-six billion, seven hundred fifteen million, five hundred sixty-five thousand, five hundred thirty-eight".