143506865329 has 3 divisors (see below), whose sum is σ = 143507244153. Its totient is φ = 143506486506.

The previous prime is 143506865297. The next prime is 143506865357. The reversal of 143506865329 is 923568605341.

The square root of 143506865329 is 378823.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 143506865329 - 2⁵ = 143506865297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143506865629) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 189412 + ... + 568234.

It is an arithmetic number, because the mean of its divisors is an integer number (47835748051).

Almost surely, 2^143506865329 is an apocalyptic number.

143506865329 is the 378823-rd square number.

143506865329 is the 189412-nd centered octagonal number.

It is an amenable number.

143506865329 is a deficient number, since it is larger than the sum of its proper divisors (378824).

143506865329 is an frugal number, since it uses more digits than its factorization.

143506865329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757646 (or 378823 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 143506865329 in words is "one hundred forty-three billion, five hundred six million, eight hundred sixty-five thousand, three hundred twenty-nine".