23573347645 has 4 divisors (see below), whose sum is σ = 28288017180. Its totient is φ = 18858678112.

The previous prime is 23573347583. The next prime is 23573347661. The reversal of 23573347645 is 54674337532.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15669782041 + 7903565604 = 125179^2 + 88902^2 .

It is a cyclic number.

It is not a de Polignac number, because 23573347645 - 2¹³ = 23573339453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2357334760 + ... + 2357334769.

It is an arithmetic number, because the mean of its divisors is an integer number (7072004295).

Almost surely, 2^23573347645 is an apocalyptic number.

It is an amenable number.

23573347645 is a deficient number, since it is larger than the sum of its proper divisors (4714669535).

23573347645 is an equidigital number, since it uses as much as digits as its factorization.

23573347645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714669534.

The product of its digits is 6350400, while the sum is 49.

The spelling of 23573347645 in words is "twenty-three billion, five hundred seventy-three million, three hundred forty-seven thousand, six hundred forty-five".