79997129088 has 64 divisors (see below), whose sum is σ = 215485297920. Its totient is φ = 26290127360.

The previous prime is 79997129033. The next prime is 79997129089. The reversal of 79997129088 is 88092179997.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79997129089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1439820 + ... + 1494347.

It is an arithmetic number, because the mean of its divisors is an integer number (3366957780).

Almost surely, 2^79997129088 is an apocalyptic number.

It is an amenable number.

79997129088 is an abundant number, since it is smaller than the sum of its proper divisors (135488168832).

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

79997129088 is a wasteful number, since it uses less digits than its factorization.

79997129088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934255 (or 2934243 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 69.

The spelling of 79997129088 in words is "seventy-nine billion, nine hundred ninety-seven million, one hundred twenty-nine thousand, eighty-eight".