166971805375716 has 144 divisors (see below), whose sum is σ = 460848839592960. Its totient is φ = 50552316250560.

The previous prime is 166971805375679. The next prime is 166971805375721. The reversal of 166971805375716 is 617573508179661.

166971805375716 is a `hidden beast` number, since 1 + 6 + 6 + 9 + 7 + 1 + 80 + 537 + 5 + 7 + 1 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3907854345 + ... + 3907897071.

It is an arithmetic number, because the mean of its divisors is an integer number (3200339163840).

Almost surely, 2^{166971805375716} is an apocalyptic number.

It is an amenable number.

166971805375716 is an abundant number, since it is smaller than the sum of its proper divisors (293877034217244).

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

166971805375716 is a wasteful number, since it uses less digits than its factorization.

166971805375716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51334 (or 51329 counting only the distinct ones).

The product of its (nonzero) digits is 400075200, while the sum is 72.

The spelling of 166971805375716 in words is "one hundred sixty-six trillion, nine hundred seventy-one billion, eight hundred five million, three hundred seventy-five thousand, seven hundred sixteen".