166850185185 has 24 divisors (see below), whose sum is σ = 292691415744. Its totient is φ = 87914633760.

The previous prime is 166850185127. The next prime is 166850185193. The reversal of 166850185185 is 581581058661.

166850185185 is a `hidden beast` number, since 1 + 6 + 6 + 8 + 501 + 8 + 51 + 85 = 666.

It is not a de Polignac number, because 166850185185 - 2¹⁸ = 166849923041 is a prime.

166850185185 is a modest number, since divided by 185185 gives 166850 as remainder.

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, 22332301 + ... + 22339770.

It is an arithmetic number, because the mean of its divisors is an integer number (12195475656).

Almost surely, 2^166850185185 is an apocalyptic number.

166850185185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166850185185 is a deficient number, since it is larger than the sum of its proper divisors (125841230559).

166850185185 is a wasteful number, since it uses less digits than its factorization.

166850185185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44672165 (or 44672162 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 54.

The spelling of 166850185185 in words is "one hundred sixty-six billion, eight hundred fifty million, one hundred eighty-five thousand, one hundred eighty-five".