Base | Representation |
---|---|
bin | 1100100010010110111… |
… | …0111010000100011000 |
3 | 202120221022010200200100 |
4 | 3020211232322010120 |
5 | 12012100120341024 |
6 | 242540031135400 |
7 | 21363231564015 |
oct | 3104556720430 |
9 | 676838120610 |
10 | 215381418264 |
11 | 83385217421 |
12 | 358aa974560 |
13 | 17405ba1abc |
14 | a5d2c3070c |
15 | 59089cb7c9 |
hex | 3225bba118 |
215381418264 has 48 divisors (see below), whose sum is σ = 617637894120. Its totient is φ = 67570640640.
The previous prime is 215381418221. The next prime is 215381418283. The reversal of 215381418264 is 462814183512.
215381418264 is a `hidden beast` number, since 2 + 1 + 5 + 381 + 4 + 1 + 8 + 264 = 666.
It is a super-3 number, since 3×2153814182643 (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a congruent number.
It is an unprimeable number.
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 11 ways as a sum of consecutive naturals, for example, 87981382 + ... + 87983829.
Almost surely, 2215381418264 is an apocalyptic number.
215381418264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.
It is an amenable number.
215381418264 is an abundant number, since it is smaller than the sum of its proper divisors (402256475856).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
215381418264 is a wasteful number, since it uses less digits than its factorization.
215381418264 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 175965240 (or 175965233 counting only the distinct ones).
The product of its digits is 368640, while the sum is 45.
The spelling of 215381418264 in words is "two hundred fifteen billion, three hundred eighty-one million, four hundred eighteen thousand, two hundred sixty-four".
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