66522163453 has 2 divisors, whose sum is σ = 66522163454. Its totient is φ = 66522163452.

The previous prime is 66522163423. The next prime is 66522163457. The reversal of 66522163453 is 35436122566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53443267684 + 13078895769 = 231178^2 + 114363^2 .

It is a cyclic number.

It is not a de Polignac number, because 66522163453 - 2¹³ = 66522155261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66522163457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33261081726 + 33261081727.

It is an arithmetic number, because the mean of its divisors is an integer number (33261081727).

Almost surely, 2^66522163453 is an apocalyptic number.

It is an amenable number.

66522163453 is a deficient number, since it is larger than the sum of its proper divisors (1).

66522163453 is an equidigital number, since it uses as much as digits as its factorization.

66522163453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 43.

The spelling of 66522163453 in words is "sixty-six billion, five hundred twenty-two million, one hundred sixty-three thousand, four hundred fifty-three".