79992909888 has 336 divisors, whose sum is σ = 234858885120. Its totient is φ = 23993625600.

The previous prime is 79992909853. The next prime is 79992909901. The reversal of 79992909888 is 88890929997.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126771333 + ... + 126771963.

Almost surely, 2^79992909888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79992909888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117429442560).

79992909888 is an abundant number, since it is smaller than the sum of its proper divisors (154865975232).

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

79992909888 is a wasteful number, since it uses less digits than its factorization.

79992909888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 423263232, while the sum is 78.

The spelling of 79992909888 in words is "seventy-nine billion, nine hundred ninety-two million, nine hundred nine thousand, eight hundred eighty-eight".