166966745345 has 8 divisors (see below), whose sum is σ = 200372546664. Its totient is φ = 133565094784.

The previous prime is 166966745339. The next prime is 166966745357. The reversal of 166966745345 is 543547669661.

It can be written as a sum of positive squares in 4 ways, for example, as 4112528641 + 162854216704 = 64129^2 + 403552^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166966745345 - 2⁸ = 166966745089 is a prime.

It is a super-2 number, since 2×166966745345² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948494 + ... + 1110663.

It is an arithmetic number, because the mean of its divisors is an integer number (25046568333).

Almost surely, 2^166966745345 is an apocalyptic number.

It is an amenable number.

166966745345 is a deficient number, since it is larger than the sum of its proper divisors (33405801319).

166966745345 is a wasteful number, since it uses less digits than its factorization.

166966745345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075379.

The product of its digits is 97977600, while the sum is 62.

The spelling of 166966745345 in words is "one hundred sixty-six billion, nine hundred sixty-six million, seven hundred forty-five thousand, three hundred forty-five".