26641511231 has 2 divisors, whose sum is σ = 26641511232. Its totient is φ = 26641511230.

The previous prime is 26641511207. The next prime is 26641511251. The reversal of 26641511231 is 13211514662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26641511231 - 2¹⁸ = 26641249087 is a prime.

It is a super-2 number, since 2×26641511231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26641511251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13320755615 + 13320755616.

It is an arithmetic number, because the mean of its divisors is an integer number (13320755616).

Almost surely, 2^26641511231 is an apocalyptic number.

26641511231 is a deficient number, since it is larger than the sum of its proper divisors (1).

26641511231 is an equidigital number, since it uses as much as digits as its factorization.

26641511231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The spelling of 26641511231 in words is "twenty-six billion, six hundred forty-one million, five hundred eleven thousand, two hundred thirty-one".