26274542891 has 2 divisors, whose sum is σ = 26274542892. Its totient is φ = 26274542890.

The previous prime is 26274542881. The next prime is 26274542893. The reversal of 26274542891 is 19824547262.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26274542891 is a prime.

Together with 26274542893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26274542893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13137271445 + 13137271446.

It is an arithmetic number, because the mean of its divisors is an integer number (13137271446).

Almost surely, 2^26274542891 is an apocalyptic number.

26274542891 is a deficient number, since it is larger than the sum of its proper divisors (1).

26274542891 is an equidigital number, since it uses as much as digits as its factorization.

26274542891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 50.

The spelling of 26274542891 in words is "twenty-six billion, two hundred seventy-four million, five hundred forty-two thousand, eight hundred ninety-one".