26301968639 has 2 divisors, whose sum is σ = 26301968640. Its totient is φ = 26301968638.

The previous prime is 26301968617. The next prime is 26301968647. The reversal of 26301968639 is 93686910362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26301968639 - 2³² = 22007001343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26301968689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13150984319 + 13150984320.

It is an arithmetic number, because the mean of its divisors is an integer number (13150984320).

Almost surely, 2^26301968639 is an apocalyptic number.

26301968639 is a deficient number, since it is larger than the sum of its proper divisors (1).

26301968639 is an equidigital number, since it uses as much as digits as its factorization.

26301968639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 53.

The spelling of 26301968639 in words is "twenty-six billion, three hundred one million, nine hundred sixty-eight thousand, six hundred thirty-nine".