26873604264989 has 2 divisors, whose sum is σ = 26873604264990. Its totient is φ = 26873604264988.

The previous prime is 26873604264907. The next prime is 26873604265099. The reversal of 26873604264989 is 98946240637862.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23616781284100 + 3256822980889 = 4859710^2 + 1804667^2 .

It is a cyclic number.

It is not a de Polignac number, because 26873604264989 - 2²⁸ = 26873335829533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26873604264589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13436802132494 + 13436802132495.

It is an arithmetic number, because the mean of its divisors is an integer number (13436802132495).

Almost surely, 2^{26873604264989} is an apocalyptic number.

It is an amenable number.

26873604264989 is a deficient number, since it is larger than the sum of its proper divisors (1).

26873604264989 is an equidigital number, since it uses as much as digits as its factorization.

26873604264989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1504935936, while the sum is 74.

The spelling of 26873604264989 in words is "twenty-six trillion, eight hundred seventy-three billion, six hundred four million, two hundred sixty-four thousand, nine hundred eighty-nine".