23105655565 has 16 divisors (see below), whose sum is σ = 29200248000. Its totient is φ = 17503160832.

The previous prime is 23105655557. The next prime is 23105655607. The reversal of 23105655565 is 56555650132.

It is a cyclic number.

It is not a de Polignac number, because 23105655565 - 2³ = 23105655557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141469 + ... + 257341.

It is an arithmetic number, because the mean of its divisors is an integer number (1825015500).

Almost surely, 2^23105655565 is an apocalyptic number.

It is an amenable number.

23105655565 is a deficient number, since it is larger than the sum of its proper divisors (6094592435).

23105655565 is a wasteful number, since it uses less digits than its factorization.

23105655565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117996.

The product of its (nonzero) digits is 675000, while the sum is 43.

The spelling of 23105655565 in words is "twenty-three billion, one hundred five million, six hundred fifty-five thousand, five hundred sixty-five".