8643143394019 has 4 divisors (see below), whose sum is σ = 8711199641344. Its totient is φ = 8575087146696.

The previous prime is 8643143393977. The next prime is 8643143394059. The reversal of 8643143394019 is 9104933413468.

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 8643143394019 - 2¹³ = 8643143385827 is a prime.

It is a super-2 number, since 2×8643143394019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8643143394059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34028123472 + ... + 34028123725.

It is an arithmetic number, because the mean of its divisors is an integer number (2177799910336).

Almost surely, 2^{8643143394019} is an apocalyptic number.

8643143394019 is a deficient number, since it is larger than the sum of its proper divisors (68056247325).

8643143394019 is a wasteful number, since it uses less digits than its factorization.

8643143394019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68056247324.

The product of its (nonzero) digits is 6718464, while the sum is 55.

The spelling of 8643143394019 in words is "eight trillion, six hundred forty-three billion, one hundred forty-three million, three hundred ninety-four thousand, nineteen".