77905903888 has 20 divisors (see below), whose sum is σ = 151265921040. Its totient is φ = 38869537184.

The previous prime is 77905903871. The next prime is 77905903909. The reversal of 77905903888 is 88830950977.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5205718 + ... + 5220661.

It is an arithmetic number, because the mean of its divisors is an integer number (7563296052).

Almost surely, 2^77905903888 is an apocalyptic number.

It is an amenable number.

77905903888 is a deficient number, since it is larger than the sum of its proper divisors (73360017152).

77905903888 is a wasteful number, since it uses less digits than its factorization.

77905903888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10426854 (or 10426848 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 64.

The spelling of 77905903888 in words is "seventy-seven billion, nine hundred five million, nine hundred three thousand, eight hundred eighty-eight".