143173666243 has 4 divisors (see below), whose sum is σ = 143177619888. Its totient is φ = 143169712600.

The previous prime is 143173666123. The next prime is 143173666249. The reversal of 143173666243 is 342666371341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 143173666243 - 2²¹ = 143171569091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143173666193 and 143173666202.

It is not an unprimeable number, because it can be changed into a prime (143173666249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1921996 + ... + 1995097.

It is an arithmetic number, because the mean of its divisors is an integer number (35794404972).

Almost surely, 2^143173666243 is an apocalyptic number.

143173666243 is a deficient number, since it is larger than the sum of its proper divisors (3953645).

143173666243 is an equidigital number, since it uses as much as digits as its factorization.

143173666243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953644.

The product of its digits is 1306368, while the sum is 46.

The spelling of 143173666243 in words is "one hundred forty-three billion, one hundred seventy-three million, six hundred sixty-six thousand, two hundred forty-three".