66327072117769 has 2 divisors, whose sum is σ = 66327072117770. Its totient is φ = 66327072117768.

The previous prime is 66327072117739. The next prime is 66327072117809. The reversal of 66327072117769 is 96771127072366.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59716002677769 + 6611069440000 = 7727613^2 + 2571200^2 .

It is a cyclic number.

It is not a de Polignac number, because 66327072117769 - 2¹¹ = 66327072115721 is a prime.

It is a super-2 number, since 2×66327072117769² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66327072117769.

It is not a weakly prime, because it can be changed into another prime (66327072117739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33163536058884 + 33163536058885.

It is an arithmetic number, because the mean of its divisors is an integer number (33163536058885).

Almost surely, 2^{66327072117769} is an apocalyptic number.

It is an amenable number.

66327072117769 is a deficient number, since it is larger than the sum of its proper divisors (1).

66327072117769 is an equidigital number, since it uses as much as digits as its factorization.

66327072117769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56010528, while the sum is 64.

The spelling of 66327072117769 in words is "sixty-six trillion, three hundred twenty-seven billion, seventy-two million, one hundred seventeen thousand, seven hundred sixty-nine".