133500544000 has 176 divisors, whose sum is σ = 334700810496. Its totient is φ = 53136384000.

The previous prime is 133500543983. The next prime is 133500544003. The reversal of 133500544000 is 445005331.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (133500544003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27005529 + ... + 27010471.

Almost surely, 2^133500544000 is an apocalyptic number.

133500544000 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 133500544000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167350405248).

133500544000 is an abundant number, since it is smaller than the sum of its proper divisors (201200266496).

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

133500544000 is an equidigital number, since it uses as much as digits as its factorization.

133500544000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189 (or 5161 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 133500544000 its reverse (445005331), we get a palindrome (133945549331).

The spelling of 133500544000 in words is "one hundred thirty-three billion, five hundred million, five hundred forty-four thousand".