13682021338 has 8 divisors (see below), whose sum is σ = 20910259188. Its totient is φ = 6711934944.

The previous prime is 13682021237. The next prime is 13682021351. The reversal of 13682021338 is 83312028631.

It can be written as a sum of positive squares in 2 ways, for example, as 13106357289 + 575664049 = 114483^2 + 23993^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 13682021297 and 13682021306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64537731 + ... + 64537942.

Almost surely, 2^13682021338 is an apocalyptic number.

13682021338 is a deficient number, since it is larger than the sum of its proper divisors (7228237850).

13682021338 is a wasteful number, since it uses less digits than its factorization.

13682021338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129075728.

The product of its (nonzero) digits is 41472, while the sum is 37.

Adding to 13682021338 its reverse (83312028631), we get a palindrome (96994049969).

The spelling of 13682021338 in words is "thirteen billion, six hundred eighty-two million, twenty-one thousand, three hundred thirty-eight".