131337561765 has 16 divisors (see below), whose sum is σ = 215265468096. Its totient is φ = 68338243200.

The previous prime is 131337561737. The next prime is 131337561787. The reversal of 131337561765 is 567165733131.

It is not a de Polignac number, because 131337561765 - 2⁶ = 131337561701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106777891 + ... + 106779120.

It is an arithmetic number, because the mean of its divisors is an integer number (13454091756).

Almost surely, 2^131337561765 is an apocalyptic number.

131337561765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131337561765 is a deficient number, since it is larger than the sum of its proper divisors (83927906331).

131337561765 is a wasteful number, since it uses less digits than its factorization.

131337561765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213557060.

The product of its digits is 1190700, while the sum is 48.

The spelling of 131337561765 in words is "one hundred thirty-one billion, three hundred thirty-seven million, five hundred sixty-one thousand, seven hundred sixty-five".