23156398253 has 2 divisors, whose sum is σ = 23156398254. Its totient is φ = 23156398252.

The previous prime is 23156398211. The next prime is 23156398261. The reversal of 23156398253 is 35289365132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14150767849 + 9005630404 = 118957^2 + 94898^2 .

It is a cyclic number.

It is not a de Polignac number, because 23156398253 - 2⁸ = 23156397997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23156398198 and 23156398207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23156398453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11578199126 + 11578199127.

It is an arithmetic number, because the mean of its divisors is an integer number (11578199127).

Almost surely, 2^23156398253 is an apocalyptic number.

It is an amenable number.

23156398253 is a deficient number, since it is larger than the sum of its proper divisors (1).

23156398253 is an equidigital number, since it uses as much as digits as its factorization.

23156398253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 47.

The spelling of 23156398253 in words is "twenty-three billion, one hundred fifty-six million, three hundred ninety-eight thousand, two hundred fifty-three".