13553442447 has 32 divisors (see below), whose sum is σ = 18703179264. Its totient is φ = 8724672000.

The previous prime is 13553442433. The next prime is 13553442493. The reversal of 13553442447 is 74424435531.

It is not a de Polignac number, because 13553442447 - 2¹¹ = 13553440399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13553442399 and 13553442408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13553442347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5700723 + ... + 5703099.

It is an arithmetic number, because the mean of its divisors is an integer number (584474352).

Almost surely, 2^13553442447 is an apocalyptic number.

13553442447 is a deficient number, since it is larger than the sum of its proper divisors (5149736817).

13553442447 is a wasteful number, since it uses less digits than its factorization.

13553442447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879.

The product of its digits is 806400, while the sum is 42.

Adding to 13553442447 its reverse (74424435531), we get a palindrome (87977877978).

The spelling of 13553442447 in words is "thirteen billion, five hundred fifty-three million, four hundred forty-two thousand, four hundred forty-seven".