13811564338 has 16 divisors (see below), whose sum is σ = 24339260736. Its totient is φ = 5795061840.

The previous prime is 13811564293. The next prime is 13811564357. The reversal of 13811564338 is 83346511831.

It is a junction number, because it is equal to n+sod(n) for n = 13811564294 and 13811564303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24145806 + ... + 24146377.

It is an arithmetic number, because the mean of its divisors is an integer number (1521203796).

Almost surely, 2^13811564338 is an apocalyptic number.

13811564338 is a deficient number, since it is larger than the sum of its proper divisors (10527696398).

13811564338 is a wasteful number, since it uses less digits than its factorization.

13811564338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48292209.

The product of its digits is 207360, while the sum is 43.

The spelling of 13811564338 in words is "thirteen billion, eight hundred eleven million, five hundred sixty-four thousand, three hundred thirty-eight".