166161097716 has 24 divisors (see below), whose sum is σ = 388363054464. Its totient is φ = 55293628800.

The previous prime is 166161097709. The next prime is 166161097789. The reversal of 166161097716 is 617790161661.

It is a super-2 number, since 2×166161097716² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11668060 + ... + 11682291.

It is an arithmetic number, because the mean of its divisors is an integer number (16181793936).

Almost surely, 2^166161097716 is an apocalyptic number.

It is an amenable number.

166161097716 is an abundant number, since it is smaller than the sum of its proper divisors (222201956748).

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

166161097716 is a wasteful number, since it uses less digits than its factorization.

166161097716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23350951 (or 23350949 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 51.

The spelling of 166161097716 in words is "one hundred sixty-six billion, one hundred sixty-one million, ninety-seven thousand, seven hundred sixteen".