65879319698631 has 96 divisors (see below), whose sum is σ = 100257794058240. Its totient is φ = 43223265274464.

The previous prime is 65879319698611. The next prime is 65879319698639. The reversal of 65879319698631 is 13689691397856.

65879319698631 is a `hidden beast` number, since 65 + 87 + 9 + 319 + 69 + 86 + 31 = 666.

It is not a de Polignac number, because 65879319698631 - 2⁹ = 65879319698119 is a prime.

It is a super-2 number, since 2×65879319698631² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65879319698639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6143734236 + ... + 6143744958.

It is an arithmetic number, because the mean of its divisors is an integer number (1044352021440).

Almost surely, 2^{65879319698631} is an apocalyptic number.

65879319698631 is a deficient number, since it is larger than the sum of its proper divisors (34378474359609).

65879319698631 is a wasteful number, since it uses less digits than its factorization.

65879319698631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11967 (or 11955 counting only the distinct ones).

The product of its digits is 3174474240, while the sum is 81.

The spelling of 65879319698631 in words is "sixty-five trillion, eight hundred seventy-nine billion, three hundred nineteen million, six hundred ninety-eight thousand, six hundred thirty-one".