77312789600 has 36 divisors (see below), whose sum is σ = 188739849564. Its totient is φ = 30925115520.

The previous prime is 77312789599. The next prime is 77312789633. The reversal of 77312789600 is 698721377.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48319694 + ... + 48321293.

It is an arithmetic number, because the mean of its divisors is an integer number (5242773599).

Almost surely, 2^77312789600 is an apocalyptic number.

It is an amenable number.

77312789600 is an abundant number, since it is smaller than the sum of its proper divisors (111427059964).

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

77312789600 is a wasteful number, since it uses less digits than its factorization.

77312789600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96641007 (or 96640994 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 50.

The spelling of 77312789600 in words is "seventy-seven billion, three hundred twelve million, seven hundred eighty-nine thousand, six hundred".