166413664143 has 6 divisors (see below), whose sum is σ = 240375292664. Its totient is φ = 110942442756.

The previous prime is 166413664133. The next prime is 166413664147. The reversal of 166413664143 is 341466314661.

166413664143 is a `hidden beast` number, since 166 + 4 + 13 + 66 + 414 + 3 = 666.

It is not a de Polignac number, because 166413664143 - 2⁴ = 166413664127 is a prime.

It is a super-2 number, since 2×166413664143² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166413664147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9245203555 + ... + 9245203572.

Almost surely, 2^166413664143 is an apocalyptic number.

166413664143 is a deficient number, since it is larger than the sum of its proper divisors (73961628521).

166413664143 is a wasteful number, since it uses less digits than its factorization.

166413664143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18490407133 (or 18490407130 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The spelling of 166413664143 in words is "one hundred sixty-six billion, four hundred thirteen million, six hundred sixty-four thousand, one hundred forty-three".