20433344013 has 32 divisors (see below), whose sum is σ = 30524112000. Its totient is φ = 13508909568.

The previous prime is 20433344011. The next prime is 20433344051. The reversal of 20433344013 is 31044333402.

20433344013 is a `hidden beast` number, since 204 + 3 + 3 + 3 + 440 + 13 = 666.

It is not a de Polignac number, because 20433344013 - 2¹ = 20433344011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433344011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2703706 + ... + 2711252.

It is an arithmetic number, because the mean of its divisors is an integer number (953878500).

Almost surely, 2^20433344013 is an apocalyptic number.

It is an amenable number.

20433344013 is a deficient number, since it is larger than the sum of its proper divisors (10090767987).

20433344013 is a wasteful number, since it uses less digits than its factorization.

20433344013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8378 (or 8372 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 20433344013 its reverse (31044333402), we get a palindrome (51477677415).

The spelling of 20433344013 in words is "twenty billion, four hundred thirty-three million, three hundred forty-four thousand, thirteen".