77077403664 has 80 divisors (see below), whose sum is σ = 215261311680. Its totient is φ = 23682378240.

The previous prime is 77077403653. The next prime is 77077403671. The reversal of 77077403664 is 46630477077.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1108347 + ... + 1175834.

It is an arithmetic number, because the mean of its divisors is an integer number (2690766396).

Almost surely, 2^77077403664 is an apocalyptic number.

77077403664 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

77077403664 is an abundant number, since it is smaller than the sum of its proper divisors (138183908016).

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

77077403664 is a wasteful number, since it uses less digits than its factorization.

77077403664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284248 (or 2284242 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 51.

The spelling of 77077403664 in words is "seventy-seven billion, seventy-seven million, four hundred three thousand, six hundred sixty-four".