1066774859977 has 2 divisors, whose sum is σ = 1066774859978. Its totient is φ = 1066774859976.

The previous prime is 1066774859963. The next prime is 1066774860013. The reversal of 1066774859977 is 7799584776601.

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., 954208570896 + 112566289081 = 976836^2 + 335509^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066774859977 - 2²³ = 1066766471369 is a prime.

It is a super-2 number, since 2×1066774859977² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1066774859957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533387429988 + 533387429989.

It is an arithmetic number, because the mean of its divisors is an integer number (533387429989).

Almost surely, 2^{1066774859977} is an apocalyptic number.

It is an amenable number.

1066774859977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066774859977 is an equidigital number, since it uses as much as digits as its factorization.

1066774859977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120210560, while the sum is 76.

The spelling of 1066774859977 in words is "one trillion, sixty-six billion, seven hundred seventy-four million, eight hundred fifty-nine thousand, nine hundred seventy-seven".