131440165599 has 32 divisors (see below), whose sum is σ = 188995403520. Its totient is φ = 80959237632.

The previous prime is 131440165553. The next prime is 131440165601. The reversal of 131440165599 is 995561044131.

It is not a de Polignac number, because 131440165599 - 2⁸ = 131440165343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131440165099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 565692 + ... + 763470.

It is an arithmetic number, because the mean of its divisors is an integer number (5906106360).

Almost surely, 2^131440165599 is an apocalyptic number.

131440165599 is a deficient number, since it is larger than the sum of its proper divisors (57555237921).

131440165599 is a wasteful number, since it uses less digits than its factorization.

131440165599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198039.

The product of its (nonzero) digits is 583200, while the sum is 48.

The spelling of 131440165599 in words is "one hundred thirty-one billion, four hundred forty million, one hundred sixty-five thousand, five hundred ninety-nine".