79707906880 has 112 divisors (see below), whose sum is σ = 217893473280. Its totient is φ = 27205705728.

The previous prime is 79707906871. The next prime is 79707906899. The reversal of 79707906880 is 8860970797.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419736 + ... + 579304.

It is an arithmetic number, because the mean of its divisors is an integer number (1945477440).

Almost surely, 2^79707906880 is an apocalyptic number.

79707906880 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 79707906880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108946736640).

79707906880 is an abundant number, since it is smaller than the sum of its proper divisors (138185566400).

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

79707906880 is a wasteful number, since it uses less digits than its factorization.

79707906880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159816 (or 159806 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 61.

The spelling of 79707906880 in words is "seventy-nine billion, seven hundred seven million, nine hundred six thousand, eight hundred eighty".