77736521160 has 48 divisors (see below), whose sum is σ = 252643694940. Its totient is φ = 20729738880.

The previous prime is 77736521147. The next prime is 77736521179. The reversal of 77736521160 is 6112563777.

77736521160 is a `hidden beast` number, since 7 + 77 + 365 + 211 + 6 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77409707076 + 326814084 = 278226^2 + 18078^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107967031 + ... + 107967750.

Almost surely, 2^77736521160 is an apocalyptic number.

It is an amenable number.

77736521160 is an abundant number, since it is smaller than the sum of its proper divisors (174907173780).

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

77736521160 is a wasteful number, since it uses less digits than its factorization.

77736521160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215934798 (or 215934791 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The spelling of 77736521160 in words is "seventy-seven billion, seven hundred thirty-six million, five hundred twenty-one thousand, one hundred sixty".