76640643162 has 12 divisors (see below), whose sum is σ = 166054726890. Its totient is φ = 25546881048.

The previous prime is 76640643127. The next prime is 76640643187. The reversal of 76640643162 is 26134604667.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 65535488001 + 11105155161 = 255999^2 + 105381^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2128906737 + ... + 2128906772.

Almost surely, 2^76640643162 is an apocalyptic number.

76640643162 is an abundant number, since it is smaller than the sum of its proper divisors (89414083728).

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

76640643162 is a wasteful number, since it uses less digits than its factorization.

76640643162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257813517 (or 4257813514 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 76640643162 in words is "seventy-six billion, six hundred forty million, six hundred forty-three thousand, one hundred sixty-two".