166669358361 has 32 divisors (see below), whose sum is σ = 253200384000. Its totient is φ = 96615852480.

The previous prime is 166669358353. The next prime is 166669358369. The reversal of 166669358361 is 163853966661.

It is an interprime number because it is at equal distance from previous prime (166669358353) and next prime (166669358369).

It is not a de Polignac number, because 166669358361 - 2³ = 166669358353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166669358295 and 166669358304.

It is not an unprimeable number, because it can be changed into a prime (166669358369) 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 31 ways as a sum of consecutive naturals, for example, 1084761 + ... + 1228838.

It is an arithmetic number, because the mean of its divisors is an integer number (7912512000).

Almost surely, 2^166669358361 is an apocalyptic number.

166669358361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166669358361 is a deficient number, since it is larger than the sum of its proper divisors (86531025639).

166669358361 is a wasteful number, since it uses less digits than its factorization.

166669358361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313709.

The product of its digits is 25194240, while the sum is 60.

The spelling of 166669358361 in words is "one hundred sixty-six billion, six hundred sixty-nine million, three hundred fifty-eight thousand, three hundred sixty-one".