77786616165050 has 48 divisors (see below), whose sum is σ = 157784886954240. Its totient is φ = 28357652456640.

The previous prime is 77786616165047. The next prime is 77786616165109. The reversal of 77786616165050 is 5056161668777.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 757364582 + ... + 757467281.

It is an arithmetic number, because the mean of its divisors is an integer number (3287185144880).

Almost surely, 2^{77786616165050} is an apocalyptic number.

77786616165050 is an abundant number, since it is smaller than the sum of its proper divisors (79998270789190).

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

77786616165050 is a wasteful number, since it uses less digits than its factorization.

77786616165050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514831967 (or 1514831962 counting only the distinct ones).

The product of its (nonzero) digits is 88905600, while the sum is 65.

The spelling of 77786616165050 in words is "seventy-seven trillion, seven hundred eighty-six billion, six hundred sixteen million, one hundred sixty-five thousand, fifty".