26665968911 has 2 divisors, whose sum is σ = 26665968912. Its totient is φ = 26665968910.

The previous prime is 26665968907. The next prime is 26665968937. The reversal of 26665968911 is 11986956662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26665968911 - 2² = 26665968907 is a prime.

It is a super-2 number, since 2×26665968911² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26665968961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13332984455 + 13332984456.

It is an arithmetic number, because the mean of its divisors is an integer number (13332984456).

Almost surely, 2^26665968911 is an apocalyptic number.

26665968911 is a deficient number, since it is larger than the sum of its proper divisors (1).

26665968911 is an equidigital number, since it uses as much as digits as its factorization.

26665968911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8398080, while the sum is 59.

The spelling of 26665968911 in words is "twenty-six billion, six hundred sixty-five million, nine hundred sixty-eight thousand, nine hundred eleven".