77670131670 has 48 divisors (see below), whose sum is σ = 202279615200. Its totient is φ = 20677443072.

The previous prime is 77670131659. The next prime is 77670131741. The reversal of 77670131670 is 7613107677.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

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, 666459 + ... + 774278.

It is an arithmetic number, because the mean of its divisors is an integer number (4214158650).

Almost surely, 2^77670131670 is an apocalyptic number.

77670131670 is an abundant number, since it is smaller than the sum of its proper divisors (124609483530).

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

77670131670 is a wasteful number, since it uses less digits than its factorization.

77670131670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441349 (or 1441346 counting only the distinct ones).

The product of its (nonzero) digits is 259308, while the sum is 45.

The spelling of 77670131670 in words is "seventy-seven billion, six hundred seventy million, one hundred thirty-one thousand, six hundred seventy".