166328429543 has 2 divisors, whose sum is σ = 166328429544. Its totient is φ = 166328429542.

The previous prime is 166328429507. The next prime is 166328429569. The reversal of 166328429543 is 345924823661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166328429543 - 2¹⁴ = 166328413159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166328429843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83164214771 + 83164214772.

It is an arithmetic number, because the mean of its divisors is an integer number (83164214772).

Almost surely, 2^166328429543 is an apocalyptic number.

166328429543 is a deficient number, since it is larger than the sum of its proper divisors (1).

166328429543 is an equidigital number, since it uses as much as digits as its factorization.

166328429543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 53.

The spelling of 166328429543 in words is "one hundred sixty-six billion, three hundred twenty-eight million, four hundred twenty-nine thousand, five hundred forty-three".