26303080691 has 2 divisors, whose sum is σ = 26303080692. Its totient is φ = 26303080690.

The previous prime is 26303080681. The next prime is 26303080729. The reversal of 26303080691 is 19608030362.

It is an a-pointer prime, because the next prime (26303080729) can be obtained adding 26303080691 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26303080691 is a prime.

It is not a weakly prime, because it can be changed into another prime (26303080621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13151540345 + 13151540346.

It is an arithmetic number, because the mean of its divisors is an integer number (13151540346).

Almost surely, 2^26303080691 is an apocalyptic number.

26303080691 is a deficient number, since it is larger than the sum of its proper divisors (1).

26303080691 is an equidigital number, since it uses as much as digits as its factorization.

26303080691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 26303080691 in words is "twenty-six billion, three hundred three million, eighty thousand, six hundred ninety-one".