133240134044440 has 128 divisors (see below), whose sum is σ = 314674579537920. Its totient is φ = 50677726105600.

The previous prime is 133240134044387. The next prime is 133240134044471. The reversal of 133240134044440 is 44440431042331.

It is a happy number.

It is a super-2 number, since 2×133240134044440² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133240134044440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261040680 + ... + 261550600.

It is an arithmetic number, because the mean of its divisors is an integer number (2458395152640).

Almost surely, 2^{133240134044440} is an apocalyptic number.

133240134044440 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 133240134044440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157337289768960).

133240134044440 is an abundant number, since it is smaller than the sum of its proper divisors (181434445493480).

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

133240134044440 is a wasteful number, since it uses less digits than its factorization.

133240134044440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511633 (or 511629 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 133240134044440 its reverse (44440431042331), we get a palindrome (177680565086771).

The spelling of 133240134044440 in words is "one hundred thirty-three trillion, two hundred forty billion, one hundred thirty-four million, forty-four thousand, four hundred forty".