20033323013 has 12 divisors (see below), whose sum is σ = 22267527660. Its totient is φ = 18007471680.

The previous prime is 20033322997. The next prime is 20033323067. The reversal of 20033323013 is 31032333002.

It can be written as a sum of positive squares in 2 ways, for example, as 1434364129 + 18598958884 = 37873^2 + 136378^2 .

It is not a de Polignac number, because 20033323013 - 2⁴ = 20033322997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033323213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 919370 + ... + 940907.

It is an arithmetic number, because the mean of its divisors is an integer number (1855627305).

Almost surely, 2^20033323013 is an apocalyptic number.

It is an amenable number.

20033323013 is a deficient number, since it is larger than the sum of its proper divisors (2234204647).

20033323013 is a wasteful number, since it uses less digits than its factorization.

20033323013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860388 (or 1860377 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 20033323013 its reverse (31032333002), we get a palindrome (51065656015).

The spelling of 20033323013 in words is "twenty billion, thirty-three million, three hundred twenty-three thousand, thirteen".