20003040013 has 16 divisors (see below), whose sum is σ = 22016526336. Its totient is φ = 18022785840.

The previous prime is 20003039983. The next prime is 20003040017. The reversal of 20003040013 is 31004030002.

It is a cyclic number.

It is not a de Polignac number, because 20003040013 - 2²¹ = 20000942861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20003039975 and 20003040002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003040017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538870 + ... + 574792.

It is an arithmetic number, because the mean of its divisors is an integer number (1376032896).

Almost surely, 2^20003040013 is an apocalyptic number.

It is an amenable number.

20003040013 is a deficient number, since it is larger than the sum of its proper divisors (2013486323).

20003040013 is a wasteful number, since it uses less digits than its factorization.

20003040013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36384.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20003040013 its reverse (31004030002), we get a palindrome (51007070015).

The spelling of 20003040013 in words is "twenty billion, three million, forty thousand, thirteen".