20331020205 has 48 divisors (see below), whose sum is σ = 39277293120. Its totient is φ = 9668242944.

The previous prime is 20331020179. The next prime is 20331020207. The reversal of 20331020205 is 50202013302.

It is not a de Polignac number, because 20331020205 - 2⁶ = 20331020141 is a prime.

It is a super-2 number, since 2×20331020205² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331020207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 684847 + ... + 713916.

It is an arithmetic number, because the mean of its divisors is an integer number (818276940).

Almost surely, 2^20331020205 is an apocalyptic number.

It is an amenable number.

20331020205 is a deficient number, since it is larger than the sum of its proper divisors (18946272915).

20331020205 is a wasteful number, since it uses less digits than its factorization.

20331020205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398810 (or 1398807 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 20331020205 its reverse (50202013302), we get a palindrome (70533033507).

The spelling of 20331020205 in words is "twenty billion, three hundred thirty-one million, twenty thousand, two hundred five".