20320633120 has 48 divisors (see below), whose sum is σ = 50831472888. Its totient is φ = 7650119680.

The previous prime is 20320633117. The next prime is 20320633129. The reversal of 20320633120 is 2133602302.

It can be written as a sum of positive squares in 4 ways, for example, as 20103836944 + 216796176 = 141788^2 + 14724^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20320633091 and 20320633100.

It is not an unprimeable number, because it can be changed into a prime (20320633129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3732691 + ... + 3738130.

Almost surely, 2^20320633120 is an apocalyptic number.

20320633120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20320633120 is an abundant number, since it is smaller than the sum of its proper divisors (30510839768).

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

20320633120 is a wasteful number, since it uses less digits than its factorization.

20320633120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7470853 (or 7470845 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The spelling of 20320633120 in words is "twenty billion, three hundred twenty million, six hundred thirty-three thousand, one hundred twenty".