26469454993 has 2 divisors, whose sum is σ = 26469454994. Its totient is φ = 26469454992.

The previous prime is 26469454939. The next prime is 26469455011. The reversal of 26469454993 is 39945496462.

Together with previous prime (26469454939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24369707664 + 2099747329 = 156108^2 + 45823^2 .

It is a cyclic number.

It is not a de Polignac number, because 26469454993 - 2²⁹ = 25932584081 is a prime.

It is not a weakly prime, because it can be changed into another prime (26469455993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13234727496 + 13234727497.

It is an arithmetic number, because the mean of its divisors is an integer number (13234727497).

Almost surely, 2^26469454993 is an apocalyptic number.

It is an amenable number.

26469454993 is a deficient number, since it is larger than the sum of its proper divisors (1).

26469454993 is an equidigital number, since it uses as much as digits as its factorization.

26469454993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50388480, while the sum is 61.

The spelling of 26469454993 in words is "twenty-six billion, four hundred sixty-nine million, four hundred fifty-four thousand, nine hundred ninety-three".