77620790960 has 40 divisors (see below), whose sum is σ = 191084126976. Its totient is φ = 29221944320.

The previous prime is 77620790959. The next prime is 77620790981. The reversal of 77620790960 is 6909702677.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28535696 + ... + 28538415.

Almost surely, 2^77620790960 is an apocalyptic number.

It is an amenable number.

77620790960 is an abundant number, since it is smaller than the sum of its proper divisors (113463336016).

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

77620790960 is a wasteful number, since it uses less digits than its factorization.

77620790960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57074141 (or 57074135 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 53.

The spelling of 77620790960 in words is "seventy-seven billion, six hundred twenty million, seven hundred ninety thousand, nine hundred sixty".