26357759891 has 2 divisors, whose sum is σ = 26357759892. Its totient is φ = 26357759890.

The previous prime is 26357759849. The next prime is 26357759927. The reversal of 26357759891 is 19895775362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26357759891 - 2¹⁴ = 26357743507 is a prime.

It is not a weakly prime, because it can be changed into another prime (26357759591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13178879945 + 13178879946.

It is an arithmetic number, because the mean of its divisors is an integer number (13178879946).

Almost surely, 2^26357759891 is an apocalyptic number.

26357759891 is a deficient number, since it is larger than the sum of its proper divisors (1).

26357759891 is an equidigital number, since it uses as much as digits as its factorization.

26357759891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28576800, while the sum is 62.

The spelling of 26357759891 in words is "twenty-six billion, three hundred fifty-seven million, seven hundred fifty-nine thousand, eight hundred ninety-one".