77704801368 has 32 divisors (see below), whose sum is σ = 194791349760. Its totient is φ = 25831020960.

The previous prime is 77704801351. The next prime is 77704801381. The reversal of 77704801368 is 86310840777.

It is a self number, because there is not a number n which added to its sum of digits gives 77704801368.

It is a congruent number.

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, 4402228 + ... + 4419843.

It is an arithmetic number, because the mean of its divisors is an integer number (6087229680).

Almost surely, 2^77704801368 is an apocalyptic number.

It is an amenable number.

77704801368 is an abundant number, since it is smaller than the sum of its proper divisors (117086548392).

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

77704801368 is a wasteful number, since it uses less digits than its factorization.

77704801368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8822447 (or 8822443 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 51.

The spelling of 77704801368 in words is "seventy-seven billion, seven hundred four million, eight hundred one thousand, three hundred sixty-eight".