20331440013 has 8 divisors (see below), whose sum is σ = 27125525376. Its totient is φ = 13545824000.

The previous prime is 20331440011. The next prime is 20331440027. The reversal of 20331440013 is 31004413302.

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

It is a cyclic number.

It is not a de Polignac number, because 20331440013 - 2¹ = 20331440011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331440011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2111733 + ... + 2121338.

It is an arithmetic number, because the mean of its divisors is an integer number (3390690672).

Almost surely, 2^20331440013 is an apocalyptic number.

It is an amenable number.

20331440013 is a deficient number, since it is larger than the sum of its proper divisors (6794085363).

20331440013 is a wasteful number, since it uses less digits than its factorization.

20331440013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234675.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20331440013 its reverse (31004413302), we get a palindrome (51335853315).

The spelling of 20331440013 in words is "twenty billion, three hundred thirty-one million, four hundred forty thousand, thirteen".