816312804875 has 32 divisors (see below), whose sum is σ = 1051850741760. Its totient is φ = 631846380000.

The previous prime is 816312804859. The next prime is 816312804949. The reversal of 816312804875 is 578408213618.

It is not a de Polignac number, because 816312804875 - 2⁴ = 816312804859 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20017256 + ... + 20057994.

It is an arithmetic number, because the mean of its divisors is an integer number (32870335680).

Almost surely, 2^816312804875 is an apocalyptic number.

816312804875 is a deficient number, since it is larger than the sum of its proper divisors (235537936885).

816312804875 is a wasteful number, since it uses less digits than its factorization.

816312804875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45956 (or 45946 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 53.

The spelling of 816312804875 in words is "eight hundred sixteen billion, three hundred twelve million, eight hundred four thousand, eight hundred seventy-five".