79690997904 has 240 divisors, whose sum is σ = 241928140608. Its totient is φ = 22537503744.

The previous prime is 79690997879. The next prime is 79690997921. The reversal of 79690997904 is 40979909697.

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, 135759499 + ... + 135760085.

Almost surely, 2^79690997904 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 79690997904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120964070304).

79690997904 is an abundant number, since it is smaller than the sum of its proper divisors (162237142704).

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

79690997904 is a wasteful number, since it uses less digits than its factorization.

79690997904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102 (or 1089 counting only the distinct ones).

The product of its (nonzero) digits is 69441624, while the sum is 69.

The spelling of 79690997904 in words is "seventy-nine billion, six hundred ninety million, nine hundred ninety-seven thousand, nine hundred four".