23543219873 has 2 divisors, whose sum is σ = 23543219874. Its totient is φ = 23543219872.

The previous prime is 23543219809. The next prime is 23543219891. The reversal of 23543219873 is 37891234532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22646337169 + 896882704 = 150487^2 + 29948^2 .

It is a cyclic number.

It is not a de Polignac number, because 23543219873 - 2⁶ = 23543219809 is a prime.

It is a super-2 number, since 2×23543219873² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23543219893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11771609936 + 11771609937.

It is an arithmetic number, because the mean of its divisors is an integer number (11771609937).

Almost surely, 2^23543219873 is an apocalyptic number.

It is an amenable number.

23543219873 is a deficient number, since it is larger than the sum of its proper divisors (1).

23543219873 is an equidigital number, since it uses as much as digits as its factorization.

23543219873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 47.

The spelling of 23543219873 in words is "twenty-three billion, five hundred forty-three million, two hundred nineteen thousand, eight hundred seventy-three".