166275543204301 has 2 divisors, whose sum is σ = 166275543204302. Its totient is φ = 166275543204300.

The previous prime is 166275543204233. The next prime is 166275543204307. The reversal of 166275543204301 is 103402345572661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165779787802500 + 495755401801 = 12875550^2 + 704099^2 .

It is a cyclic number.

It is not a de Polignac number, because 166275543204301 - 2¹⁵ = 166275543171533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166275543204307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83137771602150 + 83137771602151.

It is an arithmetic number, because the mean of its divisors is an integer number (83137771602151).

Almost surely, 2^{166275543204301} is an apocalyptic number.

It is an amenable number.

166275543204301 is a deficient number, since it is larger than the sum of its proper divisors (1).

166275543204301 is an equidigital number, since it uses as much as digits as its factorization.

166275543204301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 49.

Adding to 166275543204301 its reverse (103402345572661), we get a palindrome (269677888776962).

The spelling of 166275543204301 in words is "one hundred sixty-six trillion, two hundred seventy-five billion, five hundred forty-three million, two hundred four thousand, three hundred one".