815972833632 has 96 divisors (see below), whose sum is σ = 2337227343360. Its totient is φ = 247203345920.

The previous prime is 815972833619. The next prime is 815972833661. The reversal of 815972833632 is 236338279518.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×815972833632² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4270969 + ... + 4457927.

It is an arithmetic number, because the mean of its divisors is an integer number (24346118160).

Almost surely, 2^815972833632 is an apocalyptic number.

It is an amenable number.

815972833632 is an abundant number, since it is smaller than the sum of its proper divisors (1521254509728).

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

815972833632 is a wasteful number, since it uses less digits than its factorization.

815972833632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191116 (or 191108 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 57.

The spelling of 815972833632 in words is "eight hundred fifteen billion, nine hundred seventy-two million, eight hundred thirty-three thousand, six hundred thirty-two".