26668066063 has 2 divisors, whose sum is σ = 26668066064. Its totient is φ = 26668066062.

The previous prime is 26668066043. The next prime is 26668066081. The reversal of 26668066063 is 36066086662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26668066063 - 2²¹ = 26665968911 is a prime.

It is a super-2 number, since 2×26668066063² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26668065998 and 26668066016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26668066043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13334033031 + 13334033032.

It is an arithmetic number, because the mean of its divisors is an integer number (13334033032).

Almost surely, 2^26668066063 is an apocalyptic number.

26668066063 is a deficient number, since it is larger than the sum of its proper divisors (1).

26668066063 is an equidigital number, since it uses as much as digits as its factorization.

26668066063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 49.

The spelling of 26668066063 in words is "twenty-six billion, six hundred sixty-eight million, sixty-six thousand, sixty-three".