23643891338956 has 24 divisors (see below), whose sum is σ = 47290170492320. Its totient is φ = 10132584613632.

The previous prime is 23643891338953. The next prime is 23643891338959. The reversal of 23643891338956 is 65983319834632.

It is an interprime number because it is at equal distance from previous prime (23643891338953) and next prime (23643891338959).

It is not an unprimeable number, because it can be changed into a prime (23643891338953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20755101 + ... + 21864628.

Almost surely, 2^{23643891338956} is an apocalyptic number.

It is an amenable number.

23643891338956 is an abundant number, since it is smaller than the sum of its proper divisors (23646279153364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23643891338956 is a wasteful number, since it uses less digits than its factorization.

23643891338956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42639553 (or 42639551 counting only the distinct ones).

The product of its digits is 604661760, while the sum is 70.

The spelling of 23643891338956 in words is "twenty-three trillion, six hundred forty-three billion, eight hundred ninety-one million, three hundred thirty-eight thousand, nine hundred fifty-six".