26909115361 has 2 divisors, whose sum is σ = 26909115362. Its totient is φ = 26909115360.

The previous prime is 26909115293. The next prime is 26909115371. The reversal of 26909115361 is 16351190962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19584323136 + 7324792225 = 139944^2 + 85585^2 .

It is a cyclic number.

It is not a de Polignac number, because 26909115361 - 2¹¹ = 26909113313 is a prime.

It is not a weakly prime, because it can be changed into another prime (26909115371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13454557680 + 13454557681.

It is an arithmetic number, because the mean of its divisors is an integer number (13454557681).

Almost surely, 2^26909115361 is an apocalyptic number.

It is an amenable number.

26909115361 is a deficient number, since it is larger than the sum of its proper divisors (1).

26909115361 is an equidigital number, since it uses as much as digits as its factorization.

26909115361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 43.

The spelling of 26909115361 in words is "twenty-six billion, nine hundred nine million, one hundred fifteen thousand, three hundred sixty-one".