8002172143 has 4 divisors (see below), whose sum is σ = 9145339600. Its totient is φ = 6859004688.

The previous prime is 8002172131. The next prime is 8002172177. The reversal of 8002172143 is 3412712008.

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 8002172143 - 2⁹ = 8002171631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8002175143) 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, 571583718 + ... + 571583731.

It is an arithmetic number, because the mean of its divisors is an integer number (2286334900).

Almost surely, 2^8002172143 is an apocalyptic number.

8002172143 is a deficient number, since it is larger than the sum of its proper divisors (1143167457).

8002172143 is a wasteful number, since it uses less digits than its factorization.

8002172143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143167456.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 8002172143 is about 89454.8609243791. The cubic root of 8002172143 is about 2000.1809955365.

The spelling of 8002172143 in words is "eight billion, two million, one hundred seventy-two thousand, one hundred forty-three".