1061066772217 has 2 divisors, whose sum is σ = 1061066772218. Its totient is φ = 1061066772216.

The previous prime is 1061066772209. The next prime is 1061066772251. The reversal of 1061066772217 is 7122776601601.

1061066772217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 863122753936 + 197944018281 = 929044^2 + 444909^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061066772217 - 2³ = 1061066772209 is a prime.

It is a super-2 number, since 2×1061066772217² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1061066772257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530533386108 + 530533386109.

It is an arithmetic number, because the mean of its divisors is an integer number (530533386109).

Almost surely, 2^{1061066772217} is an apocalyptic number.

It is an amenable number.

1061066772217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061066772217 is an equidigital number, since it uses as much as digits as its factorization.

1061066772217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 46.

The spelling of 1061066772217 in words is "one trillion, sixty-one billion, sixty-six million, seven hundred seventy-two thousand, two hundred seventeen".