20320321333120 has 64 divisors (see below), whose sum is σ = 51135019174800. Its totient is φ = 7700332290048.

The previous prime is 20320321333087. The next prime is 20320321333121. The reversal of 20320321333120 is 2133312302302.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320321333121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835527369 + ... + 835551688.

Almost surely, 2^{20320321333120} is an apocalyptic number.

20320321333120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20320321333120 is an abundant number, since it is smaller than the sum of its proper divisors (30814697841680).

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

20320321333120 is a wasteful number, since it uses less digits than its factorization.

20320321333120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671079095 (or 1671079083 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 20320321333120 its reverse (2133312302302), we get a palindrome (22453633635422).

The spelling of 20320321333120 in words is "twenty trillion, three hundred twenty billion, three hundred twenty-one million, three hundred thirty-three thousand, one hundred twenty".