13513663443 has 16 divisors (see below), whose sum is σ = 21803558400. Its totient is φ = 7267852416.

The previous prime is 13513663441. The next prime is 13513663451. The reversal of 13513663443 is 34436631531.

It is a happy number.

It is not a de Polignac number, because 13513663443 - 2¹ = 13513663441 is a prime.

It is a super-2 number, since 2×13513663443² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13513663441) 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, 18926343 + ... + 18927056.

It is an arithmetic number, because the mean of its divisors is an integer number (1362722400).

Almost surely, 2^13513663443 is an apocalyptic number.

13513663443 is a deficient number, since it is larger than the sum of its proper divisors (8289894957).

13513663443 is a wasteful number, since it uses less digits than its factorization.

13513663443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37853426.

The product of its digits is 233280, while the sum is 39.

The spelling of 13513663443 in words is "thirteen billion, five hundred thirteen million, six hundred sixty-three thousand, four hundred forty-three".