23454645666 has 16 divisors (see below), whose sum is σ = 47010612864. Its totient is φ = 7801328304.

The previous prime is 23454645649. The next prime is 23454645673. The reversal of 23454645666 is 66654645432.

It is a super-2 number, since 2×23454645666² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4218721 + ... + 4224276.

It is an arithmetic number, because the mean of its divisors is an integer number (2938163304).

Almost surely, 2^23454645666 is an apocalyptic number.

23454645666 is an abundant number, since it is smaller than the sum of its proper divisors (23555967198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23454645666 is a wasteful number, since it uses less digits than its factorization.

23454645666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8443465.

The product of its digits is 12441600, while the sum is 51.

The spelling of 23454645666 in words is "twenty-three billion, four hundred fifty-four million, six hundred forty-five thousand, six hundred sixty-six".