23132458581 has 8 divisors (see below), whose sum is σ = 30854940864. Its totient is φ = 15415807680.

The previous prime is 23132458553. The next prime is 23132458589. The reversal of 23132458581 is 18585423132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23132458581 - 2²³ = 23124069973 is a prime.

It is a super-2 number, since 2×23132458581² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23132458589) 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, 1448580 + ... + 1464461.

It is an arithmetic number, because the mean of its divisors is an integer number (3856867608).

Almost surely, 2^23132458581 is an apocalyptic number.

It is an amenable number.

23132458581 is a deficient number, since it is larger than the sum of its proper divisors (7722482283).

23132458581 is a wasteful number, since it uses less digits than its factorization.

23132458581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915691.

The product of its digits is 230400, while the sum is 42.

The spelling of 23132458581 in words is "twenty-three billion, one hundred thirty-two million, four hundred fifty-eight thousand, five hundred eighty-one".