26106440861 has 2 divisors, whose sum is σ = 26106440862. Its totient is φ = 26106440860.

The previous prime is 26106440849. The next prime is 26106440951. The reversal of 26106440861 is 16804460162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15244840900 + 10861599961 = 123470^2 + 104219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26106440861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26106470861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13053220430 + 13053220431.

It is an arithmetic number, because the mean of its divisors is an integer number (13053220431).

Almost surely, 2^26106440861 is an apocalyptic number.

It is an amenable number.

26106440861 is a deficient number, since it is larger than the sum of its proper divisors (1).

26106440861 is an equidigital number, since it uses as much as digits as its factorization.

26106440861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 26106440861 in words is "twenty-six billion, one hundred six million, four hundred forty thousand, eight hundred sixty-one".