77755055808 has 28 divisors (see below), whose sum is σ = 205726919000. Its totient is φ = 25918351872.

The previous prime is 77755055789. The next prime is 77755055813. The reversal of 77755055808 is 80855055777.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202486933 + ... + 202487316.

Almost surely, 2^77755055808 is an apocalyptic number.

It is an amenable number.

77755055808 is an abundant number, since it is smaller than the sum of its proper divisors (127971863192).

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

77755055808 is a wasteful number, since it uses less digits than its factorization.

77755055808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404974264 (or 404974254 counting only the distinct ones).

The product of its (nonzero) digits is 13720000, while the sum is 57.

The spelling of 77755055808 in words is "seventy-seven billion, seven hundred fifty-five million, fifty-five thousand, eight hundred eight".