23520233202581 has 2 divisors, whose sum is σ = 23520233202582. Its totient is φ = 23520233202580.

The previous prime is 23520233202577. The next prime is 23520233202589. The reversal of 23520233202581 is 18520233202532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18473156437681 + 5047076764900 = 4298041^2 + 2246570^2 .

It is a cyclic number.

It is not a de Polignac number, because 23520233202581 - 2² = 23520233202577 is a prime.

It is a super-2 number, since 2×23520233202581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23520233202589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11760116601290 + 11760116601291.

It is an arithmetic number, because the mean of its divisors is an integer number (11760116601291).

Almost surely, 2^{23520233202581} is an apocalyptic number.

It is an amenable number.

23520233202581 is a deficient number, since it is larger than the sum of its proper divisors (1).

23520233202581 is an equidigital number, since it uses as much as digits as its factorization.

23520233202581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 23520233202581 in words is "twenty-three trillion, five hundred twenty billion, two hundred thirty-three million, two hundred two thousand, five hundred eighty-one".