23666520605 has 32 divisors (see below), whose sum is σ = 35016758784. Its totient is φ = 14953072896.

The previous prime is 23666520589. The next prime is 23666520637. The reversal of 23666520605 is 50602566632.

It is a cyclic number.

It is not a de Polignac number, because 23666520605 - 2⁴ = 23666520589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206744 + ... + 300126.

It is an arithmetic number, because the mean of its divisors is an integer number (1094273712).

Almost surely, 2^23666520605 is an apocalyptic number.

It is an amenable number.

23666520605 is a deficient number, since it is larger than the sum of its proper divisors (11350238179).

23666520605 is a wasteful number, since it uses less digits than its factorization.

23666520605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93965.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 23666520605 in words is "twenty-three billion, six hundred sixty-six million, five hundred twenty thousand, six hundred five".