66935146771 has 2 divisors, whose sum is σ = 66935146772. Its totient is φ = 66935146770.

The previous prime is 66935146727. The next prime is 66935146793. The reversal of 66935146771 is 17764153966.

66935146771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66935146771 - 2¹⁹ = 66934622483 is a prime.

It is not a weakly prime, because it can be changed into another prime (66935140771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33467573385 + 33467573386.

It is an arithmetic number, because the mean of its divisors is an integer number (33467573386).

Almost surely, 2^66935146771 is an apocalyptic number.

66935146771 is a deficient number, since it is larger than the sum of its proper divisors (1).

66935146771 is an equidigital number, since it uses as much as digits as its factorization.

66935146771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 55.

The spelling of 66935146771 in words is "sixty-six billion, nine hundred thirty-five million, one hundred forty-six thousand, seven hundred seventy-one".