20040043111 has 16 divisors (see below), whose sum is σ = 22061894400. Its totient is φ = 18202228440.

The previous prime is 20040043103. The next prime is 20040043141. The reversal of 20040043111 is 11134004002.

It is not a de Polignac number, because 20040043111 - 2³ = 20040043103 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 (20040043141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1669750 + ... + 1681708.

It is an arithmetic number, because the mean of its divisors is an integer number (1378868400).

Almost surely, 2^20040043111 is an apocalyptic number.

20040043111 is a deficient number, since it is larger than the sum of its proper divisors (2021851289).

20040043111 is a wasteful number, since it uses less digits than its factorization.

20040043111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13251 (or 13229 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20040043111 its reverse (11134004002), we get a palindrome (31174047113).

The spelling of 20040043111 in words is "twenty billion, forty million, forty-three thousand, one hundred eleven".