13285371638 has 32 divisors (see below), whose sum is σ = 24853644288. Its totient is φ = 5174395200.

The previous prime is 13285371613. The next prime is 13285371641. The reversal of 13285371638 is 83617358231.

It is a junction number, because it is equal to n+sod(n) for n = 13285371592 and 13285371601.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 512018 + ... + 537338.

It is an arithmetic number, because the mean of its divisors is an integer number (776676384).

Almost surely, 2^13285371638 is an apocalyptic number.

13285371638 is a deficient number, since it is larger than the sum of its proper divisors (11568272650).

13285371638 is a wasteful number, since it uses less digits than its factorization.

13285371638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28748.

The product of its digits is 725760, while the sum is 47.

The spelling of 13285371638 in words is "thirteen billion, two hundred eighty-five million, three hundred seventy-one thousand, six hundred thirty-eight".