20041243011 has 24 divisors (see below), whose sum is σ = 29017416480. Its totient is φ = 13329052416.

The previous prime is 20041243003. The next prime is 20041243021. The reversal of 20041243011 is 11034214002.

20041243011 is a `hidden beast` number, since 200 + 412 + 43 + 0 + 11 = 666.

It is not a de Polignac number, because 20041243011 - 2³ = 20041243003 is a prime.

It is a super-2 number, since 2×20041243011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20041243021) 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, 10664970 + ... + 10666848.

It is an arithmetic number, because the mean of its divisors is an integer number (1209059020).

Almost surely, 2^20041243011 is an apocalyptic number.

20041243011 is a deficient number, since it is larger than the sum of its proper divisors (8976173469).

20041243011 is a wasteful number, since it uses less digits than its factorization.

20041243011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075 (or 4072 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20041243011 its reverse (11034214002), we get a palindrome (31075457013).

The spelling of 20041243011 in words is "twenty billion, forty-one million, two hundred forty-three thousand, eleven".