20133542320 has 80 divisors (see below), whose sum is σ = 49245732000. Its totient is φ = 7643869184.

The previous prime is 20133542257. The next prime is 20133542339. The reversal of 20133542320 is 2324533102.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63336 + ... + 210424.

It is an arithmetic number, because the mean of its divisors is an integer number (615571650).

Almost surely, 2^20133542320 is an apocalyptic number.

20133542320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20133542320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24622866000).

20133542320 is an abundant number, since it is smaller than the sum of its proper divisors (29112189680).

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

20133542320 is a wasteful number, since it uses less digits than its factorization.

20133542320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147190 (or 147184 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The spelling of 20133542320 in words is "twenty billion, one hundred thirty-three million, five hundred forty-two thousand, three hundred twenty".