133211433520 has 160 divisors (see below), whose sum is σ = 359655552000. Its totient is φ = 45374883840.

The previous prime is 133211433427. The next prime is 133211433529. The reversal of 133211433520 is 25334112331.

133211433520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (133211433529) 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 31 ways as a sum of consecutive naturals, for example, 1443321 + ... + 1532839.

It is an arithmetic number, because the mean of its divisors is an integer number (2247847200).

Almost surely, 2^133211433520 is an apocalyptic number.

133211433520 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 133211433520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179827776000).

133211433520 is an abundant number, since it is smaller than the sum of its proper divisors (226444118480).

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

133211433520 is a wasteful number, since it uses less digits than its factorization.

133211433520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89651 (or 89645 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 133211433520 its reverse (25334112331), we get a palindrome (158545545851).

The spelling of 133211433520 in words is "one hundred thirty-three billion, two hundred eleven million, four hundred thirty-three thousand, five hundred twenty".