76888631905 has 4 divisors (see below), whose sum is σ = 92266358292. Its totient is φ = 61510905520.

The previous prime is 76888631893. The next prime is 76888631969. The reversal of 76888631905 is 50913688867.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12399045201 + 64489586704 = 111351^2 + 253948^2 .

It is not a de Polignac number, because 76888631905 - 2⁷ = 76888631777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7688863186 + ... + 7688863195.

It is an arithmetic number, because the mean of its divisors is an integer number (23066589573).

Almost surely, 2^76888631905 is an apocalyptic number.

It is an amenable number.

76888631905 is a deficient number, since it is larger than the sum of its proper divisors (15377726387).

76888631905 is a wasteful number, since it uses less digits than its factorization.

76888631905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15377726386.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 76888631905 in words is "seventy-six billion, eight hundred eighty-eight million, six hundred thirty-one thousand, nine hundred five".