23666856253 has 4 divisors (see below), whose sum is σ = 23667166368. Its totient is φ = 23666546140.

The previous prime is 23666856229. The next prime is 23666856307. The reversal of 23666856253 is 35265866632.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23666856253 - 2²⁵ = 23633301821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23666856253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23666856223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 48450 + ... + 222892.

It is an arithmetic number, because the mean of its divisors is an integer number (5916791592).

Almost surely, 2^23666856253 is an apocalyptic number.

It is an amenable number.

23666856253 is a deficient number, since it is larger than the sum of its proper divisors (310115).

23666856253 is a wasteful number, since it uses less digits than its factorization.

23666856253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310114.

The product of its digits is 9331200, while the sum is 52.

The spelling of 23666856253 in words is "twenty-three billion, six hundred sixty-six million, eight hundred fifty-six thousand, two hundred fifty-three".