26126231597 has 2 divisors, whose sum is σ = 26126231598. Its totient is φ = 26126231596.

The previous prime is 26126231591. The next prime is 26126231617. The reversal of 26126231597 is 79513262162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25437379081 + 688852516 = 159491^2 + 26246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26126231597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26126231591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13063115798 + 13063115799.

It is an arithmetic number, because the mean of its divisors is an integer number (13063115799).

Almost surely, 2^26126231597 is an apocalyptic number.

It is an amenable number.

26126231597 is a deficient number, since it is larger than the sum of its proper divisors (1).

26126231597 is an equidigital number, since it uses as much as digits as its factorization.

26126231597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The spelling of 26126231597 in words is "twenty-six billion, one hundred twenty-six million, two hundred thirty-one thousand, five hundred ninety-seven".