23518123193 has 2 divisors, whose sum is σ = 23518123194. Its totient is φ = 23518123192.

The previous prime is 23518123159. The next prime is 23518123207. The reversal of 23518123193 is 39132181532.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12625443769 + 10892679424 = 112363^2 + 104368^2 .

It is a cyclic number.

It is not a de Polignac number, because 23518123193 - 2⁶ = 23518123129 is a prime.

It is a super-2 number, since 2×23518123193² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23518123393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11759061596 + 11759061597.

It is an arithmetic number, because the mean of its divisors is an integer number (11759061597).

Almost surely, 2^23518123193 is an apocalyptic number.

It is an amenable number.

23518123193 is a deficient number, since it is larger than the sum of its proper divisors (1).

23518123193 is an equidigital number, since it uses as much as digits as its factorization.

23518123193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 38.

The spelling of 23518123193 in words is "twenty-three billion, five hundred eighteen million, one hundred twenty-three thousand, one hundred ninety-three".