20331320020 has 48 divisors (see below), whose sum is σ = 47233259136. Its totient is φ = 7289072000.

The previous prime is 20331320003. The next prime is 20331320027. The reversal of 20331320020 is 2002313302.

It is a junction number, because it is equal to n+sod(n) for n = 20331319976 and 20331320003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331320027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635191 + ... + 666430.

It is an arithmetic number, because the mean of its divisors is an integer number (984026232).

Almost surely, 2^20331320020 is an apocalyptic number.

20331320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331320020 is an abundant number, since it is smaller than the sum of its proper divisors (26901939116).

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

20331320020 is a wasteful number, since it uses less digits than its factorization.

20331320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301712 (or 1301710 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20331320020 its reverse (2002313302), we get a palindrome (22333633322).

The spelling of 20331320020 in words is "twenty billion, three hundred thirty-one million, three hundred twenty thousand, twenty".