26501256911 has 2 divisors, whose sum is σ = 26501256912. Its totient is φ = 26501256910.

The previous prime is 26501256907. The next prime is 26501256917. The reversal of 26501256911 is 11965210562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26501256911 - 2² = 26501256907 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26501256917) 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, 13250628455 + 13250628456.

It is an arithmetic number, because the mean of its divisors is an integer number (13250628456).

Almost surely, 2^26501256911 is an apocalyptic number.

26501256911 is a deficient number, since it is larger than the sum of its proper divisors (1).

26501256911 is an equidigital number, since it uses as much as digits as its factorization.

26501256911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 26501256911 in words is "twenty-six billion, five hundred one million, two hundred fifty-six thousand, nine hundred eleven".