26240280864697 has 2 divisors, whose sum is σ = 26240280864698. Its totient is φ = 26240280864696.

The previous prime is 26240280864661. The next prime is 26240280864739. The reversal of 26240280864697 is 79646808204262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25302348660736 + 937932203961 = 5030144^2 + 968469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26240280864697 is a prime.

It is not a weakly prime, because it can be changed into another prime (26240280064697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13120140432348 + 13120140432349.

It is an arithmetic number, because the mean of its divisors is an integer number (13120140432349).

Almost surely, 2^{26240280864697} is an apocalyptic number.

It is an amenable number.

26240280864697 is a deficient number, since it is larger than the sum of its proper divisors (1).

26240280864697 is an equidigital number, since it uses as much as digits as its factorization.

26240280864697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111476736, while the sum is 64.

The spelling of 26240280864697 in words is "twenty-six trillion, two hundred forty billion, two hundred eighty million, eight hundred sixty-four thousand, six hundred ninety-seven".