638353835363 has 8 divisors (see below), whose sum is σ = 666427264800. Its totient is φ = 610306982208.

The previous prime is 638353835323. The next prime is 638353835401. The reversal of 638353835363 is 363538353836.

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

It is a cyclic number.

It is not a de Polignac number, because 638353835363 - 2¹² = 638353831267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 638353835299 and 638353835308.

It is not an unprimeable number, because it can be changed into a prime (638353835323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6594968 + ... + 6691061.

It is an arithmetic number, because the mean of its divisors is an integer number (83303408100).

Almost surely, 2^638353835363 is an apocalyptic number.

638353835363 is a deficient number, since it is larger than the sum of its proper divisors (28073429437).

638353835363 is a wasteful number, since it uses less digits than its factorization.

638353835363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13288141.

The product of its digits is 41990400, while the sum is 56.

The spelling of 638353835363 in words is "six hundred thirty-eight billion, three hundred fifty-three million, eight hundred thirty-five thousand, three hundred sixty-three".