26756603891 has 2 divisors, whose sum is σ = 26756603892. Its totient is φ = 26756603890.

The previous prime is 26756603857. The next prime is 26756603903. The reversal of 26756603891 is 19830665762.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26756603891 - 2³⁰ = 25682862067 is a prime.

It is not a weakly prime, because it can be changed into another prime (26756603851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13378301945 + 13378301946.

It is an arithmetic number, because the mean of its divisors is an integer number (13378301946).

Almost surely, 2^26756603891 is an apocalyptic number.

26756603891 is a deficient number, since it is larger than the sum of its proper divisors (1).

26756603891 is an equidigital number, since it uses as much as digits as its factorization.

26756603891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 26756603891 in words is "twenty-six billion, seven hundred fifty-six million, six hundred three thousand, eight hundred ninety-one".