79976139880 has 576 divisors, whose sum is σ = 248347814400. Its totient is φ = 22887567360.

The previous prime is 79976139877. The next prime is 79976139913. The reversal of 79976139880 is 8893167997.

It is a super-3 number, since 3×79976139880³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1095563524 + ... + 1095563596.

It is an arithmetic number, because the mean of its divisors is an integer number (431159400).

Almost surely, 2^79976139880 is an apocalyptic number.

79976139880 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79976139880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124173907200).

79976139880 is an abundant number, since it is smaller than the sum of its proper divisors (168371674520).

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

79976139880 is a wasteful number, since it uses less digits than its factorization.

79976139880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 67.

The spelling of 79976139880 in words is "seventy-nine billion, nine hundred seventy-six million, one hundred thirty-nine thousand, eight hundred eighty".