77769654312 has 64 divisors (see below), whose sum is σ = 226926673920. Its totient is φ = 21747135168.

The previous prime is 77769654311. The next prime is 77769654323. The reversal of 77769654312 is 21345696777.

It is not an unprimeable number, because it can be changed into a prime (77769654311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4916728 + ... + 4932519.

It is an arithmetic number, because the mean of its divisors is an integer number (3545729280).

Almost surely, 2^77769654312 is an apocalyptic number.

It is an amenable number.

77769654312 is an abundant number, since it is smaller than the sum of its proper divisors (149157019608).

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

77769654312 is a wasteful number, since it uses less digits than its factorization.

77769654312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9849310 (or 9849306 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 57.

The spelling of 77769654312 in words is "seventy-seven billion, seven hundred sixty-nine million, six hundred fifty-four thousand, three hundred twelve".