76638630761 has 24 divisors (see below), whose sum is σ = 98588022624. Its totient is φ = 58900322880.

The previous prime is 76638630721. The next prime is 76638630781. The reversal of 76638630761 is 16703683667.

It is not a de Polignac number, because 76638630761 - 2¹⁸ = 76638368617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76638630721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 934535 + ... + 1013228.

It is an arithmetic number, because the mean of its divisors is an integer number (4107834276).

Almost surely, 2^76638630761 is an apocalyptic number.

It is an amenable number.

76638630761 is a deficient number, since it is larger than the sum of its proper divisors (21949391863).

76638630761 is a wasteful number, since it uses less digits than its factorization.

76638630761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947861 (or 1947854 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 53.

The spelling of 76638630761 in words is "seventy-six billion, six hundred thirty-eight million, six hundred thirty thousand, seven hundred sixty-one".