26297454580867 has 2 divisors, whose sum is σ = 26297454580868. Its totient is φ = 26297454580866.

The previous prime is 26297454580757. The next prime is 26297454580871. The reversal of 26297454580867 is 76808545479262.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26297454580867 is a prime.

It is a super-2 number, since 2×26297454580867² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26297454580867.

It is not a weakly prime, because it can be changed into another prime (26297454580877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13148727290433 + 13148727290434.

It is an arithmetic number, because the mean of its divisors is an integer number (13148727290434).

Almost surely, 2^{26297454580867} is an apocalyptic number.

26297454580867 is a deficient number, since it is larger than the sum of its proper divisors (1).

26297454580867 is an equidigital number, since it uses as much as digits as its factorization.

26297454580867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1625702400, while the sum is 73.

The spelling of 26297454580867 in words is "twenty-six trillion, two hundred ninety-seven billion, four hundred fifty-four million, five hundred eighty thousand, eight hundred sixty-seven".