26613111312451 has 2 divisors, whose sum is σ = 26613111312452. Its totient is φ = 26613111312450.

The previous prime is 26613111312449. The next prime is 26613111312497. The reversal of 26613111312451 is 15421311131662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26613111312451 - 2¹ = 26613111312449 is a prime.

Together with 26613111312449, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 26613111312451.

It is not a weakly prime, because it can be changed into another prime (26613111312551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13306555656225 + 13306555656226.

It is an arithmetic number, because the mean of its divisors is an integer number (13306555656226).

Almost surely, 2^{26613111312451} is an apocalyptic number.

26613111312451 is a deficient number, since it is larger than the sum of its proper divisors (1).

26613111312451 is an equidigital number, since it uses as much as digits as its factorization.

26613111312451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The spelling of 26613111312451 in words is "twenty-six trillion, six hundred thirteen billion, one hundred eleven million, three hundred twelve thousand, four hundred fifty-one".