23397111511 has 2 divisors, whose sum is σ = 23397111512. Its totient is φ = 23397111510.

The previous prime is 23397111503. The next prime is 23397111527. The reversal of 23397111511 is 11511179332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23397111511 - 2³ = 23397111503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23397111541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11698555755 + 11698555756.

It is an arithmetic number, because the mean of its divisors is an integer number (11698555756).

Almost surely, 2^23397111511 is an apocalyptic number.

23397111511 is a deficient number, since it is larger than the sum of its proper divisors (1).

23397111511 is an equidigital number, since it uses as much as digits as its factorization.

23397111511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 34.

The spelling of 23397111511 in words is "twenty-three billion, three hundred ninety-seven million, one hundred eleven thousand, five hundred eleven".