66166161143 has 2 divisors, whose sum is σ = 66166161144. Its totient is φ = 66166161142.

The previous prime is 66166161121. The next prime is 66166161151. The reversal of 66166161143 is 34116166166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66166161143 - 2²⁸ = 65897725687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66166161143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66166181143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33083080571 + 33083080572.

It is an arithmetic number, because the mean of its divisors is an integer number (33083080572).

Almost surely, 2^66166161143 is an apocalyptic number.

66166161143 is a deficient number, since it is larger than the sum of its proper divisors (1).

66166161143 is an equidigital number, since it uses as much as digits as its factorization.

66166161143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The spelling of 66166161143 in words is "sixty-six billion, one hundred sixty-six million, one hundred sixty-one thousand, one hundred forty-three".