77864437728112 has 40 divisors (see below), whose sum is σ = 172480604892896. Its totient is φ = 33357603741696.

The previous prime is 77864437728109. The next prime is 77864437728149. The reversal of 77864437728112 is 21182773446877.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133766313 + ... + 134347144.

Almost surely, 2^{77864437728112} is an apocalyptic number.

It is an amenable number.

77864437728112 is an abundant number, since it is smaller than the sum of its proper divisors (94616167164784).

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

77864437728112 is a wasteful number, since it uses less digits than its factorization.

77864437728112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268116065 (or 268116059 counting only the distinct ones).

The product of its digits is 177020928, while the sum is 67.

The spelling of 77864437728112 in words is "seventy-seven trillion, eight hundred sixty-four billion, four hundred thirty-seven million, seven hundred twenty-eight thousand, one hundred twelve".