77144870832 has 20 divisors (see below), whose sum is σ = 199290916440. Its totient is φ = 25714956928.

The previous prime is 77144870731. The next prime is 77144870849. The reversal of 77144870832 is 23807844177.

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, 803592357 + ... + 803592452.

It is an arithmetic number, because the mean of its divisors is an integer number (9964545822).

Almost surely, 2^77144870832 is an apocalyptic number.

It is an amenable number.

77144870832 is an abundant number, since it is smaller than the sum of its proper divisors (122146045608).

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

77144870832 is a wasteful number, since it uses less digits than its factorization.

77144870832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607184820 (or 1607184814 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 51.

The spelling of 77144870832 in words is "seventy-seven billion, one hundred forty-four million, eight hundred seventy thousand, eight hundred thirty-two".