381636599976 has 32 divisors (see below), whose sum is σ = 1060101667200. Its totient is φ = 127212199920.

The previous prime is 381636599969. The next prime is 381636599989. The reversal of 381636599976 is 679995636183.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 883417840 + ... + 883418271.

It is an arithmetic number, because the mean of its divisors is an integer number (33128177100).

Almost surely, 2^381636599976 is an apocalyptic number.

381636599976 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

381636599976 is an abundant number, since it is smaller than the sum of its proper divisors (678465067224).

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

381636599976 is a wasteful number, since it uses less digits than its factorization.

381636599976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766836126 (or 1766836116 counting only the distinct ones).

The product of its digits is 396809280, while the sum is 72.

The spelling of 381636599976 in words is "three hundred eighty-one billion, six hundred thirty-six million, five hundred ninety-nine thousand, nine hundred seventy-six".