21835368352234 has 4 divisors (see below), whose sum is σ = 32753052528354. Its totient is φ = 10917684176116.

The previous prime is 21835368352229. The next prime is 21835368352243. The reversal of 21835368352234 is 43225386353812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21613247490025 + 222120862209 = 4649005^2 + 471297^2 .

It is a super-2 number, since 2×21835368352234² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5458842088057 + ... + 5458842088060.

Almost surely, 2^{21835368352234} is an apocalyptic number.

21835368352234 is a deficient number, since it is larger than the sum of its proper divisors (10917684176120).

21835368352234 is a wasteful number, since it uses less digits than its factorization.

21835368352234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10917684176119.

The product of its digits is 24883200, while the sum is 55.

The spelling of 21835368352234 in words is "twenty-one trillion, eight hundred thirty-five billion, three hundred sixty-eight million, three hundred fifty-two thousand, two hundred thirty-four".