23621475253 has 2 divisors, whose sum is σ = 23621475254. Its totient is φ = 23621475252.

The previous prime is 23621475209. The next prime is 23621475281. The reversal of 23621475253 is 35257412632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23077559569 + 543915684 = 151913^2 + 23322^2 .

It is a cyclic number.

It is not a de Polignac number, because 23621475253 - 2¹⁷ = 23621344181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23601475253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11810737626 + 11810737627.

It is an arithmetic number, because the mean of its divisors is an integer number (11810737627).

Almost surely, 2^23621475253 is an apocalyptic number.

It is an amenable number.

23621475253 is a deficient number, since it is larger than the sum of its proper divisors (1).

23621475253 is an equidigital number, since it uses as much as digits as its factorization.

23621475253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 40.

Adding to 23621475253 its reverse (35257412632), we get a palindrome (58878887885).

The spelling of 23621475253 in words is "twenty-three billion, six hundred twenty-one million, four hundred seventy-five thousand, two hundred fifty-three".