77766166683372 has 12 divisors (see below), whose sum is σ = 181454388927896. Its totient is φ = 25922055561120.

The previous prime is 77766166683349. The next prime is 77766166683419. The reversal of 77766166683372 is 27338666166777.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 77766166683294 and 77766166683303.

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, 3240256945129 + ... + 3240256945152.

Almost surely, 2^{77766166683372} is an apocalyptic number.

It is an amenable number.

77766166683372 is an abundant number, since it is smaller than the sum of its proper divisors (103688222244524).

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

77766166683372 is a wasteful number, since it uses less digits than its factorization.

77766166683372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6480513890288 (or 6480513890286 counting only the distinct ones).

The product of its digits is 2688505344, while the sum is 75.

The spelling of 77766166683372 in words is "seventy-seven trillion, seven hundred sixty-six billion, one hundred sixty-six million, six hundred eighty-three thousand, three hundred seventy-two".