166081230611 has 2 divisors, whose sum is σ = 166081230612. Its totient is φ = 166081230610.

The previous prime is 166081230593. The next prime is 166081230641. The reversal of 166081230611 is 116032180661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166081230611 - 2¹⁴ = 166081214227 is a prime.

It is a super-2 number, since 2×166081230611² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (166081230641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83040615305 + 83040615306.

It is an arithmetic number, because the mean of its divisors is an integer number (83040615306).

Almost surely, 2^166081230611 is an apocalyptic number.

166081230611 is a deficient number, since it is larger than the sum of its proper divisors (1).

166081230611 is an equidigital number, since it uses as much as digits as its factorization.

166081230611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 166081230611 in words is "one hundred sixty-six billion, eighty-one million, two hundred thirty thousand, six hundred eleven".