20440142013 has 8 divisors (see below), whose sum is σ = 27559742400. Its totient is φ = 13473651488.

The previous prime is 20440142003. The next prime is 20440142017. The reversal of 20440142013 is 31024104402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20440142013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440142017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38277153 + ... + 38277686.

It is an arithmetic number, because the mean of its divisors is an integer number (3444967800).

Almost surely, 2^20440142013 is an apocalyptic number.

It is an amenable number.

20440142013 is a deficient number, since it is larger than the sum of its proper divisors (7119600387).

20440142013 is an equidigital number, since it uses as much as digits as its factorization.

20440142013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76554931.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20440142013 its reverse (31024104402), we get a palindrome (51464246415).

The spelling of 20440142013 in words is "twenty billion, four hundred forty million, one hundred forty-two thousand, thirteen".