13233134440 has 64 divisors (see below), whose sum is σ = 31515120000. Its totient is φ = 4986904320.

The previous prime is 13233134419. The next prime is 13233134477. The reversal of 13233134440 is 4443133231.

It is a super-2 number, since 2×13233134440² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13233134399 and 13233134408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89461 + ... + 185659.

It is an arithmetic number, because the mean of its divisors is an integer number (492423750).

Almost surely, 2^13233134440 is an apocalyptic number.

13233134440 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 13233134440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15757560000).

13233134440 is an abundant number, since it is smaller than the sum of its proper divisors (18281985560).

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

13233134440 is a wasteful number, since it uses less digits than its factorization.

13233134440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96410 (or 96406 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 13233134440 its reverse (4443133231), we get a palindrome (17676267671).

The spelling of 13233134440 in words is "thirteen billion, two hundred thirty-three million, one hundred thirty-four thousand, four hundred forty".