20004022013 has 4 divisors (see below), whose sum is σ = 20014061148. Its totient is φ = 19993982880.

The previous prime is 20004021977. The next prime is 20004022033. The reversal of 20004022013 is 31022040002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12832811524 + 7171210489 = 113282^2 + 84683^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004022013 - 2⁶ = 20004021949 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 (20004022033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5016578 + ... + 5020563.

It is an arithmetic number, because the mean of its divisors is an integer number (5003515287).

Almost surely, 2^20004022013 is an apocalyptic number.

It is an amenable number.

20004022013 is a deficient number, since it is larger than the sum of its proper divisors (10039135).

20004022013 is a wasteful number, since it uses less digits than its factorization.

20004022013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10039134.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20004022013 its reverse (31022040002), we get a palindrome (51026062015).

The spelling of 20004022013 in words is "twenty billion, four million, twenty-two thousand, thirteen".