13520143399 has 16 divisors (see below), whose sum is σ = 15537150976. Its totient is φ = 11524615200.

The previous prime is 13520143393. The next prime is 13520143421. The reversal of 13520143399 is 99334102531.

It is a happy number.

It is not a de Polignac number, because 13520143399 - 2⁷ = 13520143271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520143393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2391394 + ... + 2397040.

It is an arithmetic number, because the mean of its divisors is an integer number (971071936).

Almost surely, 2^13520143399 is an apocalyptic number.

13520143399 is a deficient number, since it is larger than the sum of its proper divisors (2017007577).

13520143399 is a wasteful number, since it uses less digits than its factorization.

13520143399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7486.

The product of its (nonzero) digits is 87480, while the sum is 40.

The spelling of 13520143399 in words is "thirteen billion, five hundred twenty million, one hundred forty-three thousand, three hundred ninety-nine".