13311403186538 has 8 divisors (see below), whose sum is σ = 20431456053888. Its totient is φ = 6500917835244.

The previous prime is 13311403186537. The next prime is 13311403186559. The reversal of 13311403186538 is 83568130411331.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13311403186492 and 13311403186501.

It is not an unprimeable number, because it can be changed into a prime (13311403186537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77391878906 + ... + 77391879077.

It is an arithmetic number, because the mean of its divisors is an integer number (2553932006736).

Almost surely, 2^{13311403186538} is an apocalyptic number.

13311403186538 is a deficient number, since it is larger than the sum of its proper divisors (7120052867350).

13311403186538 is a wasteful number, since it uses less digits than its factorization.

13311403186538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154783758028.

The product of its (nonzero) digits is 622080, while the sum is 47.

Adding to 13311403186538 its reverse (83568130411331), we get a palindrome (96879533597869).

The spelling of 13311403186538 in words is "thirteen trillion, three hundred eleven billion, four hundred three million, one hundred eighty-six thousand, five hundred thirty-eight".