9931379151764 has 48 divisors (see below), whose sum is σ = 20044058509440. Its totient is φ = 4217572869120.

The previous prime is 9931379151763. The next prime is 9931379151817. The reversal of 9931379151764 is 4671519731399.

It is a self number, because there is not a number n which added to its sum of digits gives 9931379151764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9931379151763) by changing a digit.

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, 421157 + ... + 4476620.

It is an arithmetic number, because the mean of its divisors is an integer number (417584552280).

Almost surely, 2^{9931379151764} is an apocalyptic number.

It is an amenable number.

9931379151764 is an abundant number, since it is smaller than the sum of its proper divisors (10112679357676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9931379151764 is a wasteful number, since it uses less digits than its factorization.

9931379151764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898448 (or 4898446 counting only the distinct ones).

The product of its digits is 38578680, while the sum is 65.

The spelling of 9931379151764 in words is "nine trillion, nine hundred thirty-one billion, three hundred seventy-nine million, one hundred fifty-one thousand, seven hundred sixty-four".