19873144143 has 12 divisors (see below), whose sum is σ = 30394220688. Its totient is φ = 12469423680.

The previous prime is 19873144117. The next prime is 19873144201. The reversal of 19873144143 is 34144137891.

It is a happy number.

19873144143 is a `hidden beast` number, since 198 + 7 + 314 + 4 + 143 = 666.

It is not a de Polignac number, because 19873144143 - 2¹² = 19873140047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19873134143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64944763 + ... + 64945068.

It is an arithmetic number, because the mean of its divisors is an integer number (2532851724).

Almost surely, 2^19873144143 is an apocalyptic number.

19873144143 is a deficient number, since it is larger than the sum of its proper divisors (10521076545).

19873144143 is a wasteful number, since it uses less digits than its factorization.

19873144143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129889854 (or 129889851 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 19873144143 in words is "nineteen billion, eight hundred seventy-three million, one hundred forty-four thousand, one hundred forty-three".