166424268013 has 2 divisors, whose sum is σ = 166424268014. Its totient is φ = 166424268012.

The previous prime is 166424267941. The next prime is 166424268061. The reversal of 166424268013 is 310862424661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157841727849 + 8582540164 = 397293^2 + 92642^2 .

It is a cyclic number.

It is not a de Polignac number, because 166424268013 - 2⁹ = 166424267501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166424268613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83212134006 + 83212134007.

It is an arithmetic number, because the mean of its divisors is an integer number (83212134007).

Almost surely, 2^166424268013 is an apocalyptic number.

It is an amenable number.

166424268013 is a deficient number, since it is larger than the sum of its proper divisors (1).

166424268013 is an equidigital number, since it uses as much as digits as its factorization.

166424268013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 166424268013 in words is "one hundred sixty-six billion, four hundred twenty-four million, two hundred sixty-eight thousand, thirteen".