143983993013 has 6 divisors (see below), whose sum is σ = 167491583766. Its totient is φ = 123414851112.

The previous prime is 143983993009. The next prime is 143983993031. The reversal of 143983993013 is 310399389341.

It can be written as a sum of positive squares in only one way, i.e., 97639375729 + 46344617284 = 312473^2 + 215278^2 .

It is not a de Polignac number, because 143983993013 - 2² = 143983993009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143983993063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1469224370 + ... + 1469224467.

It is an arithmetic number, because the mean of its divisors is an integer number (27915263961).

Almost surely, 2^143983993013 is an apocalyptic number.

It is an amenable number.

143983993013 is a deficient number, since it is larger than the sum of its proper divisors (23507590753).

143983993013 is an equidigital number, since it uses as much as digits as its factorization.

143983993013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938448851 (or 2938448844 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 53.

The spelling of 143983993013 in words is "one hundred forty-three billion, nine hundred eighty-three million, nine hundred ninety-three thousand, thirteen".