77934183912 has 64 divisors (see below), whose sum is σ = 233136456000. Its totient is φ = 23979748032.

The previous prime is 77934183881. The next prime is 77934183959. The reversal of 77934183912 is 21938143977.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 15 ways as a sum of consecutive naturals, for example, 13874362 + ... + 13879977.

It is an arithmetic number, because the mean of its divisors is an integer number (3642757125).

Almost surely, 2^77934183912 is an apocalyptic number.

77934183912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

77934183912 is an abundant number, since it is smaller than the sum of its proper divisors (155202272088).

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

77934183912 is a wasteful number, since it uses less digits than its factorization.

77934183912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27754367 (or 27754357 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The spelling of 77934183912 in words is "seventy-seven billion, nine hundred thirty-four million, one hundred eighty-three thousand, nine hundred twelve".