20442531113 has 16 divisors (see below), whose sum is σ = 20806896000. Its totient is φ = 20082142080.

The previous prime is 20442531073. The next prime is 20442531119. The reversal of 20442531113 is 31113524402.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20442531113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20442531119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6787778 + ... + 6790788.

It is an arithmetic number, because the mean of its divisors is an integer number (1300431000).

Almost surely, 2^20442531113 is an apocalyptic number.

It is an amenable number.

20442531113 is a deficient number, since it is larger than the sum of its proper divisors (364364887).

20442531113 is a wasteful number, since it uses less digits than its factorization.

20442531113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 20442531113 in words is "twenty billion, four hundred forty-two million, five hundred thirty-one thousand, one hundred thirteen".