166605316160 has 56 divisors (see below), whose sum is σ = 398920920216. Its totient is φ = 66273914880.

The previous prime is 166605316139. The next prime is 166605316181. The reversal of 166605316160 is 61613506661.

It is an interprime number because it is at equal distance from previous prime (166605316139) and next prime (166605316181).

It can be written as a sum of positive squares in 4 ways, for example, as 6086496256 + 160518819904 = 78016^2 + 400648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1380317 + ... + 1496156.

It is an arithmetic number, because the mean of its divisors is an integer number (7123587861).

Almost surely, 2^166605316160 is an apocalyptic number.

166605316160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166605316160 is an abundant number, since it is smaller than the sum of its proper divisors (232315604056).

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

166605316160 is a wasteful number, since it uses less digits than its factorization.

166605316160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876671 (or 2876661 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 166605316160 in words is "one hundred sixty-six billion, six hundred five million, three hundred sixteen thousand, one hundred sixty".