666656110161423 has 24 divisors (see below), whose sum is σ = 970039092693216. Its totient is φ = 441164881555200.

The previous prime is 666656110161317. The next prime is 666656110161451. The reversal of 666656110161423 is 324161011656666.

666656110161423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 666656110161423 - 2²⁸ = 666655841725967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 666656110161423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666656110161473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1696203 + ... + 36553923.

It is an arithmetic number, because the mean of its divisors is an integer number (40418295528884).

Almost surely, 2^{666656110161423} is an apocalyptic number.

666656110161423 is a deficient number, since it is larger than the sum of its proper divisors (303382982531793).

666656110161423 is a wasteful number, since it uses less digits than its factorization.

666656110161423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34873375 (or 34873372 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 666656110161423 in words is "six hundred sixty-six trillion, six hundred fifty-six billion, one hundred ten million, one hundred sixty-one thousand, four hundred twenty-three".