166023504366245 has 16 divisors (see below), whose sum is σ = 210993141444480. Its totient is φ = 125147892707904.

The previous prime is 166023504366241. The next prime is 166023504366277. The reversal of 166023504366245 is 542663405320661.

It is a cyclic number.

It is not a de Polignac number, because 166023504366245 - 2² = 166023504366241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166023504366241) by changing a digit.

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, 10773743390 + ... + 10773758799.

It is an arithmetic number, because the mean of its divisors is an integer number (13187071340280).

Almost surely, 2^{166023504366245} is an apocalyptic number.

It is an amenable number.

166023504366245 is a deficient number, since it is larger than the sum of its proper divisors (44969637078235).

166023504366245 is a wasteful number, since it uses less digits than its factorization.

166023504366245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21547502284.

The product of its (nonzero) digits is 18662400, while the sum is 53.

The spelling of 166023504366245 in words is "one hundred sixty-six trillion, twenty-three billion, five hundred four million, three hundred sixty-six thousand, two hundred forty-five".