13331201440 has 48 divisors (see below), whose sum is σ = 33347615112. Its totient is φ = 5018804224.

The previous prime is 13331201413. The next prime is 13331201447. The reversal of 13331201440 is 4410213331.

It can be written as a sum of positive squares in 4 ways, for example, as 12143158416 + 1188043024 = 110196^2 + 34468^2 .

It is not an unprimeable number, because it can be changed into a prime (13331201447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2447869 + ... + 2453308.

Almost surely, 2^13331201440 is an apocalyptic number.

13331201440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13331201440 is an abundant number, since it is smaller than the sum of its proper divisors (20016413672).

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

13331201440 is a wasteful number, since it uses less digits than its factorization.

13331201440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4901209 (or 4901201 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13331201440 its reverse (4410213331), we get a palindrome (17741414771).

The spelling of 13331201440 in words is "thirteen billion, three hundred thirty-one million, two hundred one thousand, four hundred forty".