66026798111 has 2 divisors, whose sum is σ = 66026798112. Its totient is φ = 66026798110.

The previous prime is 66026798081. The next prime is 66026798143. The reversal of 66026798111 is 11189762066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66026798111 - 2²² = 66022603807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66026798191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33013399055 + 33013399056.

It is an arithmetic number, because the mean of its divisors is an integer number (33013399056).

Almost surely, 2^66026798111 is an apocalyptic number.

66026798111 is a deficient number, since it is larger than the sum of its proper divisors (1).

66026798111 is an equidigital number, since it uses as much as digits as its factorization.

66026798111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 66026798111 in words is "sixty-six billion, twenty-six million, seven hundred ninety-eight thousand, one hundred eleven".