77766180325836 has 24 divisors (see below), whose sum is σ = 181454842072560. Its totient is φ = 25921999921152.

The previous prime is 77766180325793. The next prime is 77766180325837. The reversal of 77766180325836 is 63852308166777.

It is not an unprimeable number, because it can be changed into a prime (77766180325837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1976221 + ... + 12626868.

It is an arithmetic number, because the mean of its divisors is an integer number (7560618419690).

Almost surely, 2^{77766180325836} is an apocalyptic number.

It is an amenable number.

77766180325836 is an abundant number, since it is smaller than the sum of its proper divisors (103688661746724).

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

77766180325836 is a wasteful number, since it uses less digits than its factorization.

77766180325836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15046873 (or 15046871 counting only the distinct ones).

The product of its (nonzero) digits is 426746880, while the sum is 69.

The spelling of 77766180325836 in words is "seventy-seven trillion, seven hundred sixty-six billion, one hundred eighty million, three hundred twenty-five thousand, eight hundred thirty-six".