77707707008 has 32 divisors (see below), whose sum is σ = 154826501760. Its totient is φ = 38849291008.

The previous prime is 77707706983. The next prime is 77707707067. The reversal of 77707707008 is 80070770777.

It is a tau number, because it is divible by the number of its divisors (32).

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, 1234835 + ... + 1296237.

It is an arithmetic number, because the mean of its divisors is an integer number (4838328180).

Almost surely, 2^77707707008 is an apocalyptic number.

It is an amenable number.

77707707008 is a deficient number, since it is larger than the sum of its proper divisors (77118794752).

77707707008 is an equidigital number, since it uses as much as digits as its factorization.

77707707008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71304 (or 71292 counting only the distinct ones).

The product of its (nonzero) digits is 941192, while the sum is 50.

The spelling of 77707707008 in words is "seventy-seven billion, seven hundred seven million, seven hundred seven thousand, eight".