20333113013 has 4 divisors (see below), whose sum is σ = 20336777580. Its totient is φ = 20329448448.

The previous prime is 20333112967. The next prime is 20333113027. The reversal of 20333113013 is 31031133302.

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 18480499249 + 1852613764 = 135943^2 + 43042^2 .

It is a cyclic number.

It is not a de Polignac number, because 20333113013 - 2⁸ = 20333112757 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 (20333113613) 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, 1823948 + ... + 1835061.

It is an arithmetic number, because the mean of its divisors is an integer number (5084194395).

Almost surely, 2^20333113013 is an apocalyptic number.

It is an amenable number.

20333113013 is a deficient number, since it is larger than the sum of its proper divisors (3664567).

20333113013 is an equidigital number, since it uses as much as digits as its factorization.

20333113013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664566.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 20333113013 its reverse (31031133302), we get a palindrome (51364246315).

The spelling of 20333113013 in words is "twenty billion, three hundred thirty-three million, one hundred thirteen thousand, thirteen".