79902811885404 has 24 divisors (see below), whose sum is σ = 186455725576848. Its totient is φ = 26632009031680.

The previous prime is 79902811885387. The next prime is 79902811885433. The reversal of 79902811885404 is 40458811820997.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282552387 + ... + 282835034.

It is an arithmetic number, because the mean of its divisors is an integer number (7768988565702).

Almost surely, 2^{79902811885404} is an apocalyptic number.

It is an amenable number.

79902811885404 is an abundant number, since it is smaller than the sum of its proper divisors (106552913691444).

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

79902811885404 is a wasteful number, since it uses less digits than its factorization.

79902811885404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565399205 (or 565399203 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 66.

The spelling of 79902811885404 in words is "seventy-nine trillion, nine hundred two billion, eight hundred eleven million, eight hundred eighty-five thousand, four hundred four".