66206242882453 has 2 divisors, whose sum is σ = 66206242882454. Its totient is φ = 66206242882452.

The previous prime is 66206242882357. The next prime is 66206242882487. The reversal of 66206242882453 is 35428824260266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53193362650884 + 13012880231569 = 7293378^2 + 3607337^2 .

It is a cyclic number.

It is not a de Polignac number, because 66206242882453 - 2³³ = 66197652947861 is a prime.

It is a super-2 number, since 2×66206242882453² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66206246882453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33103121441226 + 33103121441227.

It is an arithmetic number, because the mean of its divisors is an integer number (33103121441227).

Almost surely, 2^{66206242882453} is an apocalyptic number.

It is an amenable number.

66206242882453 is a deficient number, since it is larger than the sum of its proper divisors (1).

66206242882453 is an equidigital number, since it uses as much as digits as its factorization.

66206242882453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53084160, while the sum is 58.

The spelling of 66206242882453 in words is "sixty-six trillion, two hundred six billion, two hundred forty-two million, eight hundred eighty-two thousand, four hundred fifty-three".