80404400879 has 16 divisors (see below), whose sum is σ = 88762483584. Its totient is φ = 72226274400.

The previous prime is 80404400801. The next prime is 80404400911. The reversal of 80404400879 is 97800440408.

It is a cyclic number.

It is not a de Polignac number, because 80404400879 - 2⁸ = 80404400623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80404402879) 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, 180584 + ... + 439794.

It is an arithmetic number, because the mean of its divisors is an integer number (5547655224).

Almost surely, 2^80404400879 is an apocalyptic number.

80404400879 is a deficient number, since it is larger than the sum of its proper divisors (8358082705).

80404400879 is a wasteful number, since it uses less digits than its factorization.

80404400879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259558.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 80404400879 in words is "eighty billion, four hundred four million, four hundred thousand, eight hundred seventy-nine".