79904637904 has 160 divisors (see below), whose sum is σ = 194811142400. Its totient is φ = 31548787200.

The previous prime is 79904637877. The next prime is 79904637941. The reversal of 79904637904 is 40973640997.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57859294 + ... + 57860674.

It is an arithmetic number, because the mean of its divisors is an integer number (1217569640).

Almost surely, 2^79904637904 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 79904637904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97405571200).

79904637904 is an abundant number, since it is smaller than the sum of its proper divisors (114906504496).

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

79904637904 is a wasteful number, since it uses less digits than its factorization.

79904637904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234 (or 2214 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 58.

The spelling of 79904637904 in words is "seventy-nine billion, nine hundred four million, six hundred thirty-seven thousand, nine hundred four".