77093808864 has 24 divisors (see below), whose sum is σ = 202371248520. Its totient is φ = 25697936256.

The previous prime is 77093808811. The next prime is 77093808907. The reversal of 77093808864 is 46880839077.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 77093808798 and 77093808807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401530159 + ... + 401530350.

It is an arithmetic number, because the mean of its divisors is an integer number (8432135355).

Almost surely, 2^77093808864 is an apocalyptic number.

It is an amenable number.

77093808864 is an abundant number, since it is smaller than the sum of its proper divisors (125277439656).

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

77093808864 is a wasteful number, since it uses less digits than its factorization.

77093808864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803060522 (or 803060514 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 77093808864 in words is "seventy-seven billion, ninety-three million, eight hundred eight thousand, eight hundred sixty-four".