77868192032 has 24 divisors (see below), whose sum is σ = 153375144300. Its totient is φ = 38915774464.

The previous prime is 77868192013. The next prime is 77868192049. The reversal of 77868192032 is 23029186877.

It can be written as a sum of positive squares in 2 ways, for example, as 77843232016 + 24960016 = 279004^2 + 4996^2 .

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, 503357 + ... + 639612.

Almost surely, 2^77868192032 is an apocalyptic number.

It is an amenable number.

77868192032 is a deficient number, since it is larger than the sum of its proper divisors (75506952268).

77868192032 is a wasteful number, since it uses less digits than its factorization.

77868192032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145108 (or 1145100 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 77868192032 in words is "seventy-seven billion, eight hundred sixty-eight million, one hundred ninety-two thousand, thirty-two".