20203340434013 has 6 divisors (see below), whose sum is σ = 22206977501982. Its totient is φ = 18366673121720.

The previous prime is 20203340434003. The next prime is 20203340434019. The reversal of 20203340434013 is 31043404330202.

It can be written as a sum of positive squares in only one way, i.e., 20009759793529 + 193580640484 = 4473227^2 + 439978^2 .

It is not a de Polignac number, because 20203340434013 - 2¹² = 20203340429917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203340434019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83484877706 + ... + 83484877947.

It is an arithmetic number, because the mean of its divisors is an integer number (3701162916997).

Almost surely, 2^{20203340434013} is an apocalyptic number.

It is an amenable number.

20203340434013 is a deficient number, since it is larger than the sum of its proper divisors (2003637067969).

20203340434013 is a wasteful number, since it uses less digits than its factorization.

20203340434013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166969755675 (or 166969755664 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 20203340434013 its reverse (31043404330202), we get a palindrome (51246744764215).

The spelling of 20203340434013 in words is "twenty trillion, two hundred three billion, three hundred forty million, four hundred thirty-four thousand, thirteen".