20433043013 has 4 divisors (see below), whose sum is σ = 20451569088. Its totient is φ = 20414516940.

The previous prime is 20433042983. The next prime is 20433043031. The reversal of 20433043013 is 31034033402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20433043013 - 2²² = 20428848709 is a prime.

It is a super-2 number, since 2×20433043013² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20433043013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433043073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9261383 + ... + 9263588.

It is an arithmetic number, because the mean of its divisors is an integer number (5112892272).

Almost surely, 2^20433043013 is an apocalyptic number.

It is an amenable number.

20433043013 is a deficient number, since it is larger than the sum of its proper divisors (18526075).

20433043013 is a wasteful number, since it uses less digits than its factorization.

20433043013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18526074.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20433043013 its reverse (31034033402), we get a palindrome (51467076415).

The spelling of 20433043013 in words is "twenty billion, four hundred thirty-three million, forty-three thousand, thirteen".