77913884752 has 20 divisors (see below), whose sum is σ = 164681620416. Its totient is φ = 35415402080.

The previous prime is 77913884743. The next prime is 77913884791. The reversal of 77913884752 is 25748831977.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221346088 + ... + 221346439.

Almost surely, 2^77913884752 is an apocalyptic number.

It is an amenable number.

77913884752 is an abundant number, since it is smaller than the sum of its proper divisors (86767735664).

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

77913884752 is a wasteful number, since it uses less digits than its factorization.

77913884752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442692546 (or 442692540 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 61.

The spelling of 77913884752 in words is "seventy-seven billion, nine hundred thirteen million, eight hundred eighty-four thousand, seven hundred fifty-two".