13520011443 has 8 divisors (see below), whose sum is σ = 18078633408. Its totient is φ = 8987365224.

The previous prime is 13520011433. The next prime is 13520011451. The reversal of 13520011443 is 34411002531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13520011443 - 2¹⁷ = 13519880371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13520011433) 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, 6492721 + ... + 6494802.

It is an arithmetic number, because the mean of its divisors is an integer number (2259829176).

Almost surely, 2^13520011443 is an apocalyptic number.

13520011443 is a deficient number, since it is larger than the sum of its proper divisors (4558621965).

13520011443 is a wasteful number, since it uses less digits than its factorization.

13520011443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12987873.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 13520011443 its reverse (34411002531), we get a palindrome (47931013974).

The spelling of 13520011443 in words is "thirteen billion, five hundred twenty million, eleven thousand, four hundred forty-three".