166515168180006 has 48 divisors (see below), whose sum is σ = 369605079043200. Its totient is φ = 54147958074240.

The previous prime is 166515168179993. The next prime is 166515168180061. The reversal of 166515168180006 is 600081861515661.

It is a happy number.

166515168180006 is a `hidden beast` number, since 1 + 66 + 51 + 516 + 8 + 18 + 0 + 0 + 0 + 6 = 666.

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, 5165131 + ... + 18965993.

It is an arithmetic number, because the mean of its divisors is an integer number (7700105813400).

Almost surely, 2^{166515168180006} is an apocalyptic number.

166515168180006 is an abundant number, since it is smaller than the sum of its proper divisors (203089910863194).

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

166515168180006 is a wasteful number, since it uses less digits than its factorization.

166515168180006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13817261 (or 13817258 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 54.

The spelling of 166515168180006 in words is "one hundred sixty-six trillion, five hundred fifteen billion, one hundred sixty-eight million, one hundred eighty thousand, six".