133244311020 has 96 divisors (see below), whose sum is σ = 378891948288. Its totient is φ = 34979357952.

The previous prime is 133244310973. The next prime is 133244311021. The reversal of 133244311020 is 20113442331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133244311021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6916842 + ... + 6936078.

It is an arithmetic number, because the mean of its divisors is an integer number (3946791128).

Almost surely, 2^133244311020 is an apocalyptic number.

133244311020 is a gapful number since it is divisible by the number (10) 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 133244311020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189445974144).

133244311020 is an abundant number, since it is smaller than the sum of its proper divisors (245647637268).

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

133244311020 is a wasteful number, since it uses less digits than its factorization.

133244311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21039 (or 21037 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 133244311020 its reverse (20113442331), we get a palindrome (153357753351).

The spelling of 133244311020 in words is "one hundred thirty-three billion, two hundred forty-four million, three hundred eleven thousand, twenty".