166994499611 has 2 divisors, whose sum is σ = 166994499612. Its totient is φ = 166994499610.

The previous prime is 166994499577. The next prime is 166994499613. The reversal of 166994499611 is 116994499661.

166994499611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166994499611 - 2³⁰ = 165920757787 is a prime.

It is a super-3 number, since 3×166994499611³ (a number of 35 digits) contains 333 as substring.

Together with 166994499613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166994499613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83497249805 + 83497249806.

It is an arithmetic number, because the mean of its divisors is an integer number (83497249806).

Almost surely, 2^166994499611 is an apocalyptic number.

166994499611 is a deficient number, since it is larger than the sum of its proper divisors (1).

166994499611 is an equidigital number, since it uses as much as digits as its factorization.

166994499611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22674816, while the sum is 65.

The spelling of 166994499611 in words is "one hundred sixty-six billion, nine hundred ninety-four million, four hundred ninety-nine thousand, six hundred eleven".