26351632316309 has 2 divisors, whose sum is σ = 26351632316310. Its totient is φ = 26351632316308.

The previous prime is 26351632316237. The next prime is 26351632316371. The reversal of 26351632316309 is 90361323615362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26043446345284 + 308185971025 = 5103278^2 + 555145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26351632316309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26351632316509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13175816158154 + 13175816158155.

It is an arithmetic number, because the mean of its divisors is an integer number (13175816158155).

Almost surely, 2^{26351632316309} is an apocalyptic number.

It is an amenable number.

26351632316309 is a deficient number, since it is larger than the sum of its proper divisors (1).

26351632316309 is an equidigital number, since it uses as much as digits as its factorization.

26351632316309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3149280, while the sum is 50.

The spelling of 26351632316309 in words is "twenty-six trillion, three hundred fifty-one billion, six hundred thirty-two million, three hundred sixteen thousand, three hundred nine".