76636638560 has 24 divisors (see below), whose sum is σ = 181054058976. Its totient is φ = 30654655360.

The previous prime is 76636638539. The next prime is 76636638563. The reversal of 76636638560 is 6583663667.

It is a junction number, because it is equal to n+sod(n) for n = 76636638496 and 76636638505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76636638563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239489336 + ... + 239489655.

It is an arithmetic number, because the mean of its divisors is an integer number (7543919124).

Almost surely, 2^76636638560 is an apocalyptic number.

It is an amenable number.

76636638560 is an abundant number, since it is smaller than the sum of its proper divisors (104417420416).

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

76636638560 is a wasteful number, since it uses less digits than its factorization.

76636638560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478979006 (or 478978998 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 56.

The spelling of 76636638560 in words is "seventy-six billion, six hundred thirty-six million, six hundred thirty-eight thousand, five hundred sixty".