1066166016523 has 2 divisors, whose sum is σ = 1066166016524. Its totient is φ = 1066166016522.

The previous prime is 1066166016499. The next prime is 1066166016563. The reversal of 1066166016523 is 3256106616601.

1066166016523 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 is a cyclic number.

It is not a de Polignac number, because 1066166016523 - 2¹⁷ = 1066165885451 is a prime.

It is a super-2 number, since 2×1066166016523² (a number of 25 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 1066166016523.

It is not a weakly prime, because it can be changed into another prime (1066166016563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533083008261 + 533083008262.

It is an arithmetic number, because the mean of its divisors is an integer number (533083008262).

Almost surely, 2^{1066166016523} is an apocalyptic number.

1066166016523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066166016523 is an equidigital number, since it uses as much as digits as its factorization.

1066166016523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 1066166016523 in words is "one trillion, sixty-six billion, one hundred sixty-six million, sixteen thousand, five hundred twenty-three".