166850168355 has 64 divisors (see below), whose sum is σ = 319802757120. Its totient is φ = 82048249728.

The previous prime is 166850168351. The next prime is 166850168357. The reversal of 166850168355 is 553861058661.

166850168355 is a `hidden beast` number, since 1 + 6 + 6 + 8 + 501 + 6 + 83 + 55 = 666.

It is not a de Polignac number, because 166850168355 - 2² = 166850168351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166850168351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1503094 + ... + 1610276.

It is an arithmetic number, because the mean of its divisors is an integer number (4996918080).

Almost surely, 2^166850168355 is an apocalyptic number.

166850168355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166850168355 is a deficient number, since it is larger than the sum of its proper divisors (152952588765).

166850168355 is a wasteful number, since it uses less digits than its factorization.

166850168355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108097 (or 108091 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 166850168355 in words is "one hundred sixty-six billion, eight hundred fifty million, one hundred sixty-eight thousand, three hundred fifty-five".