166309121159 has 2 divisors, whose sum is σ = 166309121160. Its totient is φ = 166309121158.

The previous prime is 166309121089. The next prime is 166309121161. The reversal of 166309121159 is 951121903661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166309121159 - 2³² = 162014153863 is a prime.

Together with 166309121161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166309111159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83154560579 + 83154560580.

It is an arithmetic number, because the mean of its divisors is an integer number (83154560580).

Almost surely, 2^166309121159 is an apocalyptic number.

166309121159 is a deficient number, since it is larger than the sum of its proper divisors (1).

166309121159 is an equidigital number, since it uses as much as digits as its factorization.

166309121159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 44.

The spelling of 166309121159 in words is "one hundred sixty-six billion, three hundred nine million, one hundred twenty-one thousand, one hundred fifty-nine".