811315945392 has 40 divisors (see below), whose sum is σ = 2219187735216. Its totient is φ = 254530492416.

The previous prime is 811315945381. The next prime is 811315945397. The reversal of 811315945392 is 293549513118.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (811315945397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497129053 + ... + 497130684.

Almost surely, 2^811315945392 is an apocalyptic number.

It is an amenable number.

811315945392 is an abundant number, since it is smaller than the sum of its proper divisors (1407871789824).

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

811315945392 is a wasteful number, since it uses less digits than its factorization.

811315945392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994259765 (or 994259759 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 51.

The spelling of 811315945392 in words is "eight hundred eleven billion, three hundred fifteen million, nine hundred forty-five thousand, three hundred ninety-two".