166488165593 has 8 divisors (see below), whose sum is σ = 168291325440. Its totient is φ = 164693654640.

The previous prime is 166488165559. The next prime is 166488165617. The reversal of 166488165593 is 395561884661.

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 166488165593 - 2¹⁶ = 166488100057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (106488165593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2123513 + ... + 2200518.

It is an arithmetic number, because the mean of its divisors is an integer number (21036415680).

Almost surely, 2^166488165593 is an apocalyptic number.

It is an amenable number.

166488165593 is a deficient number, since it is larger than the sum of its proper divisors (1803159847).

166488165593 is a wasteful number, since it uses less digits than its factorization.

166488165593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324447.

The product of its digits is 37324800, while the sum is 62.

The spelling of 166488165593 in words is "one hundred sixty-six billion, four hundred eighty-eight million, one hundred sixty-five thousand, five hundred ninety-three".