671165645104170 has 80 divisors (see below), whose sum is σ = 1804832638059528. Its totient is φ = 178963344138240.

The previous prime is 671165645104147. The next prime is 671165645104181. The reversal of 671165645104170 is 71401546561176.

671165645104170 is a `hidden beast` number, since 6 + 7 + 1 + 1 + 6 + 56 + 4 + 510 + 4 + 1 + 70 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 506236635088209 + 164929010015961 = 22499703^2 + 12842469^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22535079 + ... + 43013498.

Almost surely, 2^{671165645104170} is an apocalyptic number.

671165645104170 is an abundant number, since it is smaller than the sum of its proper divisors (1133666992955358).

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

671165645104170 is a wasteful number, since it uses less digits than its factorization.

671165645104170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65561237 (or 65561228 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 671165645104170 in words is "six hundred seventy-one trillion, one hundred sixty-five billion, six hundred forty-five million, one hundred four thousand, one hundred seventy".