20013331020 has 24 divisors (see below), whose sum is σ = 56037327024. Its totient is φ = 5336888256.

The previous prime is 20013331003. The next prime is 20013331033. The reversal of 20013331020 is 2013331002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166777699 + ... + 166777818.

It is an arithmetic number, because the mean of its divisors is an integer number (2334888626).

Almost surely, 2^20013331020 is an apocalyptic number.

20013331020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20013331020 is an abundant number, since it is smaller than the sum of its proper divisors (36023996004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20013331020 is a wasteful number, since it uses less digits than its factorization.

20013331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333555529 (or 333555527 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20013331020 its reverse (2013331002), we get a palindrome (22026662022).

The spelling of 20013331020 in words is "twenty billion, thirteen million, three hundred thirty-one thousand, twenty".