23344472581 has 8 divisors (see below), whose sum is σ = 23394099960. Its totient is φ = 23294884032.

The previous prime is 23344472579. The next prime is 23344472603. The reversal of 23344472581 is 18527444332.

It can be written as a sum of positive squares in 4 ways, for example, as 225270081 + 23119202500 = 15009^2 + 152050^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23344472581 - 2¹ = 23344472579 is a prime.

It is a super-2 number, since 2×23344472581² (a number of 22 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 (23344472551) 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, 1407171 + ... + 1423663.

It is an arithmetic number, because the mean of its divisors is an integer number (2924262495).

Almost surely, 2^23344472581 is an apocalyptic number.

It is an amenable number.

23344472581 is a deficient number, since it is larger than the sum of its proper divisors (49627379).

23344472581 is a wasteful number, since it uses less digits than its factorization.

23344472581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19415.

The product of its digits is 645120, while the sum is 43.

The spelling of 23344472581 in words is "twenty-three billion, three hundred forty-four million, four hundred seventy-two thousand, five hundred eighty-one".