166664104240505 has 8 divisors (see below), whose sum is σ = 199998137601600. Its totient is φ = 133330475050416.

The previous prime is 166664104240499. The next prime is 166664104240573. The reversal of 166664104240505 is 505042401466661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166664104240505 is a prime.

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, 100134815 + ... + 101785604.

It is an arithmetic number, because the mean of its divisors is an integer number (24999767200200).

Almost surely, 2^{166664104240505} is an apocalyptic number.

It is an amenable number.

166664104240505 is a deficient number, since it is larger than the sum of its proper divisors (33334033361095).

166664104240505 is a wasteful number, since it uses less digits than its factorization.

166664104240505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202085503.

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 166664104240505 in words is "one hundred sixty-six trillion, six hundred sixty-four billion, one hundred four million, two hundred forty thousand, five hundred five".