Base | Representation |
---|---|
bin | 10011111001010110… |
… | …000010111110110111 |
3 | 2001010211120202021201 |
4 | 103321112002332313 |
5 | 322222433102401 |
6 | 13451502553331 |
7 | 1354253665030 |
oct | 237126027667 |
9 | 61124522251 |
10 | 21363175351 |
11 | 9072a56921 |
12 | 4182598847 |
13 | 2025c31c7b |
14 | 106936da87 |
15 | 850789b01 |
hex | 4f9582fb7 |
21363175351 has 24 divisors (see below), whose sum is σ = 25468876160. Its totient is φ = 17552003616.
The previous prime is 21363175343. The next prime is 21363175363. The reversal of 21363175351 is 15357136312.
It is not a de Polignac number, because 21363175351 - 23 = 21363175343 is a prime.
It is a super-2 number, since 2×213631753512 (a number of 21 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 21363175351.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21363175391) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 805240 + ... + 831346.
Almost surely, 221363175351 is an apocalyptic number.
21363175351 is a deficient number, since it is larger than the sum of its proper divisors (4105700809).
21363175351 is a wasteful number, since it uses less digits than its factorization.
21363175351 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 26311 (or 26282 counting only the distinct ones).
The product of its digits is 56700, while the sum is 37.
The spelling of 21363175351 in words is "twenty-one billion, three hundred sixty-three million, one hundred seventy-five thousand, three hundred fifty-one".
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