77953886808 has 64 divisors (see below), whose sum is σ = 222751326720. Its totient is φ = 22269945600.

The previous prime is 77953886807. The next prime is 77953886863. The reversal of 77953886808 is 80868835977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77953886807) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1777788 + ... + 1821108.

It is an arithmetic number, because the mean of its divisors is an integer number (3480489480).

Almost surely, 2^77953886808 is an apocalyptic number.

It is an amenable number.

77953886808 is an abundant number, since it is smaller than the sum of its proper divisors (144797439912).

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

77953886808 is a wasteful number, since it uses less digits than its factorization.

77953886808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54048 (or 54044 counting only the distinct ones).

The product of its (nonzero) digits is 162570240, while the sum is 69.

The spelling of 77953886808 in words is "seventy-seven billion, nine hundred fifty-three million, eight hundred eighty-six thousand, eight hundred eight".