166875142464646 has 32 divisors (see below), whose sum is σ = 312160380325632. Its totient is φ = 64999165976160.

The previous prime is 166875142464623. The next prime is 166875142464659. The reversal of 166875142464646 is 646464241578661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142107496 + ... + 143276971.

It is an arithmetic number, because the mean of its divisors is an integer number (9755011885176).

Almost surely, 2^{166875142464646} is an apocalyptic number.

166875142464646 is a deficient number, since it is larger than the sum of its proper divisors (145285237860986).

166875142464646 is a wasteful number, since it uses less digits than its factorization.

166875142464646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285388284.

The product of its digits is 1114767360, while the sum is 70.

The spelling of 166875142464646 in words is "one hundred sixty-six trillion, eight hundred seventy-five billion, one hundred forty-two million, four hundred sixty-four thousand, six hundred forty-six".