8643142463 has 4 divisors (see below), whose sum is σ = 8646924000. Its totient is φ = 8639360928.

The previous prime is 8643142421. The next prime is 8643142477. The reversal of 8643142463 is 3642413468.

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 8643142463 - 2²⁴ = 8626365247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8643142463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8643142763) 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, 1887338 + ... + 1891911.

It is an arithmetic number, because the mean of its divisors is an integer number (2161731000).

Almost surely, 2^8643142463 is an apocalyptic number.

8643142463 is a deficient number, since it is larger than the sum of its proper divisors (3781537).

8643142463 is a wasteful number, since it uses less digits than its factorization.

8643142463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3781536.

The product of its digits is 331776, while the sum is 41.

The square root of 8643142463 is about 92968.5025317715. The cubic root of 8643142463 is about 2052.2198806789.

The spelling of 8643142463 in words is "eight billion, six hundred forty-three million, one hundred forty-two thousand, four hundred sixty-three".