26317376749 has 2 divisors, whose sum is σ = 26317376750. Its totient is φ = 26317376748.

The previous prime is 26317376719. The next prime is 26317376759. The reversal of 26317376749 is 94767371362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13738184100 + 12579192649 = 117210^2 + 112157^2 .

It is a cyclic number.

It is not a de Polignac number, because 26317376749 - 2⁷ = 26317376621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26317376749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26317376719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13158688374 + 13158688375.

It is an arithmetic number, because the mean of its divisors is an integer number (13158688375).

Almost surely, 2^26317376749 is an apocalyptic number.

It is an amenable number.

26317376749 is a deficient number, since it is larger than the sum of its proper divisors (1).

26317376749 is an equidigital number, since it uses as much as digits as its factorization.

26317376749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8001504, while the sum is 55.

The spelling of 26317376749 in words is "twenty-six billion, three hundred seventeen million, three hundred seventy-six thousand, seven hundred forty-nine".