20133132320 has 48 divisors (see below), whose sum is σ = 54359460288. Its totient is φ = 6902787840.

The previous prime is 20133132319. The next prime is 20133132343. The reversal of 20133132320 is 2323133102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20133132292 and 20133132301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8986886 + ... + 8989125.

It is an arithmetic number, because the mean of its divisors is an integer number (1132488756).

Almost surely, 2^20133132320 is an apocalyptic number.

20133132320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20133132320 is an abundant number, since it is smaller than the sum of its proper divisors (34226327968).

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

20133132320 is a wasteful number, since it uses less digits than its factorization.

20133132320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17976033 (or 17976025 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20133132320 its reverse (2323133102), we get a palindrome (22456265422).

The spelling of 20133132320 in words is "twenty billion, one hundred thirty-three million, one hundred thirty-two thousand, three hundred twenty".