77108467666680 has 128 divisors (see below), whose sum is σ = 263974934491200. Its totient is φ = 20006521330176.

The previous prime is 77108467666663. The next prime is 77108467666687. The reversal of 77108467666680 is 8666676480177.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 77108467666599 and 77108467666608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77108467666687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 964780707 + ... + 964860626.

Almost surely, 2^{77108467666680} is an apocalyptic number.

It is an amenable number.

77108467666680 is an abundant number, since it is smaller than the sum of its proper divisors (186866466824520).

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

77108467666680 is a wasteful number, since it uses less digits than its factorization.

77108467666680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929641390 (or 1929641380 counting only the distinct ones).

The product of its (nonzero) digits is 682795008, while the sum is 72.

The spelling of 77108467666680 in words is "seventy-seven trillion, one hundred eight billion, four hundred sixty-seven million, six hundred sixty-six thousand, six hundred eighty".