133324040400 has 120 divisors (see below), whose sum is σ = 427344552960. Its totient is φ = 35531166720.

The previous prime is 133324040321. The next prime is 133324040401. The reversal of 133324040400 is 4040423331.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133324040401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1962196 + ... + 2029004.

It is an arithmetic number, because the mean of its divisors is an integer number (3561204608).

Almost surely, 2^133324040400 is an apocalyptic number.

133324040400 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 133324040400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213672276480).

133324040400 is an abundant number, since it is smaller than the sum of its proper divisors (294020512560).

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

133324040400 is a wasteful number, since it uses less digits than its factorization.

133324040400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68493 (or 68482 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 133324040400 its reverse (4040423331), we get a palindrome (137364463731).

The spelling of 133324040400 in words is "one hundred thirty-three billion, three hundred twenty-four million, forty thousand, four hundred".