66055126369 has 2 divisors, whose sum is σ = 66055126370. Its totient is φ = 66055126368.

The previous prime is 66055126331. The next prime is 66055126409. The reversal of 66055126369 is 96362155066.

66055126369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44906695744 + 21148430625 = 211912^2 + 145425^2 .

It is a cyclic number.

It is not a de Polignac number, because 66055126369 - 2²³ = 66046737761 is a prime.

It is a super-2 number, since 2×66055126369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66055126769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33027563184 + 33027563185.

It is an arithmetic number, because the mean of its divisors is an integer number (33027563185).

Almost surely, 2^66055126369 is an apocalyptic number.

It is an amenable number.

66055126369 is a deficient number, since it is larger than the sum of its proper divisors (1).

66055126369 is an equidigital number, since it uses as much as digits as its factorization.

66055126369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 66055126369 in words is "sixty-six billion, fifty-five million, one hundred twenty-six thousand, three hundred sixty-nine".