26502915013 has 2 divisors, whose sum is σ = 26502915014. Its totient is φ = 26502915012.

The previous prime is 26502914989. The next prime is 26502915041. The reversal of 26502915013 is 31051920562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19734068484 + 6768846529 = 140478^2 + 82273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26502915013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26502915013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26502910013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13251457506 + 13251457507.

It is an arithmetic number, because the mean of its divisors is an integer number (13251457507).

Almost surely, 2^26502915013 is an apocalyptic number.

It is an amenable number.

26502915013 is a deficient number, since it is larger than the sum of its proper divisors (1).

26502915013 is an equidigital number, since it uses as much as digits as its factorization.

26502915013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 26502915013 in words is "twenty-six billion, five hundred two million, nine hundred fifteen thousand, thirteen".