13635444361 has 16 divisors (see below), whose sum is σ = 17739168768. Its totient is φ = 10163062800.

The previous prime is 13635444311. The next prime is 13635444391. The reversal of 13635444361 is 16344453631.

It is not a de Polignac number, because 13635444361 - 2⁹ = 13635443849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13635444311) 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, 3847875 + ... + 3851416.

It is an arithmetic number, because the mean of its divisors is an integer number (1108698048).

Almost surely, 2^13635444361 is an apocalyptic number.

13635444361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13635444361 is a deficient number, since it is larger than the sum of its proper divisors (4103724407).

13635444361 is a wasteful number, since it uses less digits than its factorization.

13635444361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7699332.

The product of its digits is 311040, while the sum is 40.

Adding to 13635444361 its reverse (16344453631), we get a palindrome (29979897992).

The spelling of 13635444361 in words is "thirteen billion, six hundred thirty-five million, four hundred forty-four thousand, three hundred sixty-one".