23664958664951 has 4 divisors (see below), whose sum is σ = 23679575688600. Its totient is φ = 23650341641304.

The previous prime is 23664958664929. The next prime is 23664958665053. The reversal of 23664958664951 is 15946685946632.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23664958664951 - 2¹⁸ = 23664958402807 is a prime.

It is a super-2 number, since 2×23664958664951² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23664958664251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7308509396 + ... + 7308512633.

It is an arithmetic number, because the mean of its divisors is an integer number (5919893922150).

Almost surely, 2^{23664958664951} is an apocalyptic number.

23664958664951 is a deficient number, since it is larger than the sum of its proper divisors (14617023649).

23664958664951 is a wasteful number, since it uses less digits than its factorization.

23664958664951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14617023648.

The product of its digits is 2015539200, while the sum is 74.

The spelling of 23664958664951 in words is "twenty-three trillion, six hundred sixty-four billion, nine hundred fifty-eight million, six hundred sixty-four thousand, nine hundred fifty-one".