26566151231 has 2 divisors, whose sum is σ = 26566151232. Its totient is φ = 26566151230.

The previous prime is 26566151147. The next prime is 26566151239. The reversal of 26566151231 is 13215166562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26566151231 - 2³⁰ = 25492409407 is a prime.

It is a super-2 number, since 2×26566151231² (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 (26566151239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13283075615 + 13283075616.

It is an arithmetic number, because the mean of its divisors is an integer number (13283075616).

Almost surely, 2^26566151231 is an apocalyptic number.

26566151231 is a deficient number, since it is larger than the sum of its proper divisors (1).

26566151231 is an equidigital number, since it uses as much as digits as its factorization.

26566151231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The spelling of 26566151231 in words is "twenty-six billion, five hundred sixty-six million, one hundred fifty-one thousand, two hundred thirty-one".