23217912655 has 16 divisors (see below), whose sum is σ = 32074136640. Its totient is φ = 15804640512.

The previous prime is 23217912593. The next prime is 23217912689. The reversal of 23217912655 is 55621971232.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23217912655 - 2⁷ = 23217912527 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, 2416260 + ... + 2425849.

It is an arithmetic number, because the mean of its divisors is an integer number (2004633540).

Almost surely, 2^23217912655 is an apocalyptic number.

23217912655 is a deficient number, since it is larger than the sum of its proper divisors (8856223985).

23217912655 is a wasteful number, since it uses less digits than its factorization.

23217912655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4842258.

The product of its digits is 226800, while the sum is 43.

The spelling of 23217912655 in words is "twenty-three billion, two hundred seventeen million, nine hundred twelve thousand, six hundred fifty-five".