78196797231 has 32 divisors (see below), whose sum is σ = 119851673088. Its totient is φ = 44424132480.

The previous prime is 78196797197. The next prime is 78196797247. The reversal of 78196797231 is 13279769187.

It is not a de Polignac number, because 78196797231 - 2⁶ = 78196797167 is a prime.

It is a super-2 number, since 2×78196797231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78196797031) 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, 2575320 + ... + 2605506.

It is an arithmetic number, because the mean of its divisors is an integer number (3745364784).

Almost surely, 2^78196797231 is an apocalyptic number.

78196797231 is a deficient number, since it is larger than the sum of its proper divisors (41654875857).

78196797231 is a wasteful number, since it uses less digits than its factorization.

78196797231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30911.

The product of its digits is 8001504, while the sum is 60.

The spelling of 78196797231 in words is "seventy-eight billion, one hundred ninety-six million, seven hundred ninety-seven thousand, two hundred thirty-one".