166275543204343 has 2 divisors, whose sum is σ = 166275543204344. Its totient is φ = 166275543204342.

The previous prime is 166275543204307. The next prime is 166275543204521. The reversal of 166275543204343 is 343402345572661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166275543204343 - 2¹⁷ = 166275543073271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166275543201343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83137771602171 + 83137771602172.

It is an arithmetic number, because the mean of its divisors is an integer number (83137771602172).

Almost surely, 2^{166275543204343} is an apocalyptic number.

166275543204343 is a deficient number, since it is larger than the sum of its proper divisors (1).

166275543204343 is an equidigital number, since it uses as much as digits as its factorization.

166275543204343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43545600, while the sum is 55.

The spelling of 166275543204343 in words is "one hundred sixty-six trillion, two hundred seventy-five billion, five hundred forty-three million, two hundred four thousand, three hundred forty-three".