80400400404 has 24 divisors (see below), whose sum is σ = 190170812160. Its totient is φ = 26433008064.

The previous prime is 80400400403. The next prime is 80400400511. The reversal of 80400400404 is 40400400408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80400400403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45889764 + ... + 45891515.

It is an arithmetic number, because the mean of its divisors is an integer number (7923783840).

Almost surely, 2^80400400404 is an apocalyptic number.

It is an amenable number.

80400400404 is an abundant number, since it is smaller than the sum of its proper divisors (109770411756).

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

80400400404 is a wasteful number, since it uses less digits than its factorization.

80400400404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91781359 (or 91781357 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The spelling of 80400400404 in words is "eighty billion, four hundred million, four hundred thousand, four hundred four".