20043040239 has 24 divisors (see below), whose sum is σ = 30659737680. Its totient is φ = 12573696768.

The previous prime is 20043040229. The next prime is 20043040247. The reversal of 20043040239 is 93204034002.

It is a happy number.

20043040239 is a `hidden beast` number, since 200 + 430 + 4 + 0 + 23 + 9 = 666.

It is not a de Polignac number, because 20043040239 - 2⁴ = 20043040223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043040229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1233832 + ... + 1249970.

It is an arithmetic number, because the mean of its divisors is an integer number (1277489070).

Almost surely, 2^20043040239 is an apocalyptic number.

20043040239 is a deficient number, since it is larger than the sum of its proper divisors (10616697441).

20043040239 is a wasteful number, since it uses less digits than its factorization.

20043040239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24279 (or 24276 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The spelling of 20043040239 in words is "twenty billion, forty-three million, forty thousand, two hundred thirty-nine".