26100856289 has 2 divisors, whose sum is σ = 26100856290. Its totient is φ = 26100856288.

The previous prime is 26100856261. The next prime is 26100856319. The reversal of 26100856289 is 98265800162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25088025664 + 1012830625 = 158392^2 + 31825^2 .

It is a cyclic number.

It is not a de Polignac number, because 26100856289 - 2²⁸ = 25832420833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26100856189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13050428144 + 13050428145.

It is an arithmetic number, because the mean of its divisors is an integer number (13050428145).

Almost surely, 2^26100856289 is an apocalyptic number.

It is an amenable number.

26100856289 is a deficient number, since it is larger than the sum of its proper divisors (1).

26100856289 is an equidigital number, since it uses as much as digits as its factorization.

26100856289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 26100856289 in words is "twenty-six billion, one hundred million, eight hundred fifty-six thousand, two hundred eighty-nine".