Base | Representation |
---|---|
bin | 10100001010101001… |
… | …110001101011000000 |
3 | 2001220001222211010201 |
4 | 110022221301223000 |
5 | 323321302410000 |
6 | 13540354534544 |
7 | 1364411136352 |
oct | 241251615300 |
9 | 61801884121 |
10 | 21653560000 |
11 | 9201963136 |
12 | 4243897454 |
13 | 20711442c7 |
14 | 1095b5d0d2 |
15 | 86aee996a |
hex | 50aa71ac0 |
21653560000 has 70 divisors (see below), whose sum is σ = 53693890580. Its totient is φ = 8661408000.
The previous prime is 21653559997. The next prime is 21653560043. The reversal of 21653560000 is 6535612.
It is an unprimeable number.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 230670 + ... + 310669.
Almost surely, 221653560000 is an apocalyptic number.
21653560000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
21653560000 is an abundant number, since it is smaller than the sum of its proper divisors (32040330580).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21653560000 is an frugal number, since it uses more digits than its factorization.
21653560000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 541371 (or 541346 counting only the distinct ones).
The product of its (nonzero) digits is 5400, while the sum is 28.
The spelling of 21653560000 in words is "twenty-one billion, six hundred fifty-three million, five hundred sixty thousand".
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