166601160066623 has 4 divisors (see below), whose sum is σ = 166602326582040. Its totient is φ = 166599993551208.

The previous prime is 166601160066617. The next prime is 166601160066629. The reversal of 166601160066623 is 326660061106661.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (166601160066617) and next prime (166601160066629).

It is a cyclic number.

It is not a de Polignac number, because 166601160066623 - 2²⁴ = 166601143289407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166601160066629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583043453 + ... + 583329126.

It is an arithmetic number, because the mean of its divisors is an integer number (41650581645510).

Almost surely, 2^{166601160066623} is an apocalyptic number.

166601160066623 is a deficient number, since it is larger than the sum of its proper divisors (1166515417).

166601160066623 is a wasteful number, since it uses less digits than its factorization.

166601160066623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166515416.

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 166601160066623 in words is "one hundred sixty-six trillion, six hundred one billion, one hundred sixty million, sixty-six thousand, six hundred twenty-three".