26444640040277 has 2 divisors, whose sum is σ = 26444640040278. Its totient is φ = 26444640040276.

The previous prime is 26444640040157. The next prime is 26444640040331. The reversal of 26444640040277 is 77204004644462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19368369704401 + 7076270335876 = 4400951^2 + 2660126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26444640040277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26444640042277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13222320020138 + 13222320020139.

It is an arithmetic number, because the mean of its divisors is an integer number (13222320020139).

Almost surely, 2^{26444640040277} is an apocalyptic number.

It is an amenable number.

26444640040277 is a deficient number, since it is larger than the sum of its proper divisors (1).

26444640040277 is an equidigital number, since it uses as much as digits as its factorization.

26444640040277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7225344, while the sum is 50.

The spelling of 26444640040277 in words is "twenty-six trillion, four hundred forty-four billion, six hundred forty million, forty thousand, two hundred seventy-seven".