26850655664447 has 2 divisors, whose sum is σ = 26850655664448. Its totient is φ = 26850655664446.

The previous prime is 26850655664411. The next prime is 26850655664449. The reversal of 26850655664447 is 74446655605862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26850655664447 - 2²⁰ = 26850654615871 is a prime.

It is a super-2 number, since 2×26850655664447² (a number of 28 digits) contains 22 as substring.

Together with 26850655664449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26850655664449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13425327832223 + 13425327832224.

It is an arithmetic number, because the mean of its divisors is an integer number (13425327832224).

Almost surely, 2^{26850655664447} is an apocalyptic number.

26850655664447 is a deficient number, since it is larger than the sum of its proper divisors (1).

26850655664447 is an equidigital number, since it uses as much as digits as its factorization.

26850655664447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216000, while the sum is 68.

The spelling of 26850655664447 in words is "twenty-six trillion, eight hundred fifty billion, six hundred fifty-five million, six hundred sixty-four thousand, four hundred forty-seven".