26363811791 has 2 divisors, whose sum is σ = 26363811792. Its totient is φ = 26363811790.

The previous prime is 26363811781. The next prime is 26363811809. The reversal of 26363811791 is 19711836362.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26363811791 - 2³⁰ = 25290069967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26363811751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13181905895 + 13181905896.

It is an arithmetic number, because the mean of its divisors is an integer number (13181905896).

Almost surely, 2^26363811791 is an apocalyptic number.

26363811791 is a deficient number, since it is larger than the sum of its proper divisors (1).

26363811791 is an equidigital number, since it uses as much as digits as its factorization.

26363811791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The spelling of 26363811791 in words is "twenty-six billion, three hundred sixty-three million, eight hundred eleven thousand, seven hundred ninety-one".