811583974932 has 48 divisors (see below), whose sum is σ = 1960216191360. Its totient is φ = 261036721792.

The previous prime is 811583974921. The next prime is 811583974937. The reversal of 811583974932 is 239479385118.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811583974937) 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, 166383 + ... + 1284854.

It is an arithmetic number, because the mean of its divisors is an integer number (40837837320).

Almost surely, 2^811583974932 is an apocalyptic number.

It is an amenable number.

811583974932 is an abundant number, since it is smaller than the sum of its proper divisors (1148632216428).

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

811583974932 is a wasteful number, since it uses less digits than its factorization.

811583974932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452880 (or 1452878 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 60.

The spelling of 811583974932 in words is "eight hundred eleven billion, five hundred eighty-three million, nine hundred seventy-four thousand, nine hundred thirty-two".