80517173800 has 48 divisors (see below), whose sum is σ = 213945636960. Its totient is φ = 27605887680.

The previous prime is 80517173767. The next prime is 80517173879. The reversal of 80517173800 is 837171508.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28754734 + ... + 28757533.

It is an arithmetic number, because the mean of its divisors is an integer number (4457200770).

Almost surely, 2^80517173800 is an apocalyptic number.

It is an amenable number.

80517173800 is an abundant number, since it is smaller than the sum of its proper divisors (133428463160).

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

80517173800 is a wasteful number, since it uses less digits than its factorization.

80517173800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57512290 (or 57512281 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 40.

The spelling of 80517173800 in words is "eighty billion, five hundred seventeen million, one hundred seventy-three thousand, eight hundred".