133311240440 has 96 divisors (see below), whose sum is σ = 349405449120. Its totient is φ = 45643352832.

The previous prime is 133311240421. The next prime is 133311240443. The reversal of 133311240440 is 44042113331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133311240443) 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, 1378142 + ... + 1471698.

It is an arithmetic number, because the mean of its divisors is an integer number (3639640095).

Almost surely, 2^133311240440 is an apocalyptic number.

133311240440 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 133311240440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174702724560).

133311240440 is an abundant number, since it is smaller than the sum of its proper divisors (216094208680).

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

133311240440 is a wasteful number, since it uses less digits than its factorization.

133311240440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94309 (or 94298 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 133311240440 its reverse (44042113331), we get a palindrome (177353353771).

The spelling of 133311240440 in words is "one hundred thirty-three billion, three hundred eleven million, two hundred forty thousand, four hundred forty".