77766331365328 has 20 divisors (see below), whose sum is σ = 151596636761728. Its totient is φ = 38644618652640.

The previous prime is 77766331365313. The next prime is 77766331365347. The reversal of 77766331365328 is 82356313366777.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14909186688 + ... + 14909191903.

Almost surely, 2^{77766331365328} is an apocalyptic number.

It is an amenable number.

77766331365328 is a deficient number, since it is larger than the sum of its proper divisors (73830305396400).

77766331365328 is a wasteful number, since it uses less digits than its factorization.

77766331365328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29818378762 (or 29818378756 counting only the distinct ones).

The product of its digits is 480090240, while the sum is 67.

The spelling of 77766331365328 in words is "seventy-seven trillion, seven hundred sixty-six billion, three hundred thirty-one million, three hundred sixty-five thousand, three hundred twenty-eight".