76660637572 has 12 divisors (see below), whose sum is σ = 136687363596. Its totient is φ = 37607105120.

The previous prime is 76660637567. The next prime is 76660637587. The reversal of 76660637572 is 27573606667.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25938390916 + 50722246656 = 161054^2 + 225216^2 .

It is an unprimeable number.

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, 180803179 + ... + 180803602.

It is an arithmetic number, because the mean of its divisors is an integer number (11390613633).

Almost surely, 2^76660637572 is an apocalyptic number.

It is an amenable number.

76660637572 is a deficient number, since it is larger than the sum of its proper divisors (60026726024).

76660637572 is a wasteful number, since it uses less digits than its factorization.

76660637572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361606838 (or 361606836 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 55.

The spelling of 76660637572 in words is "seventy-six billion, six hundred sixty million, six hundred thirty-seven thousand, five hundred seventy-two".