79902811885403 has 16 divisors (see below), whose sum is σ = 87885970292736. Its totient is φ = 72182264466720.

The previous prime is 79902811885387. The next prime is 79902811885433. The reversal of 79902811885403 is 30458811820997.

It is a cyclic number.

It is not a de Polignac number, because 79902811885403 - 2⁴ = 79902811885387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79902811885403.

It is not an unprimeable number, because it can be changed into a prime (79902811885433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4609298 + ... + 13455528.

It is an arithmetic number, because the mean of its divisors is an integer number (5492873143296).

Almost surely, 2^{79902811885403} is an apocalyptic number.

79902811885403 is a deficient number, since it is larger than the sum of its proper divisors (7983158407333).

79902811885403 is a wasteful number, since it uses less digits than its factorization.

79902811885403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8861074.

The product of its (nonzero) digits is 34836480, while the sum is 65.

The spelling of 79902811885403 in words is "seventy-nine trillion, nine hundred two billion, eight hundred eleven million, eight hundred eighty-five thousand, four hundred three".