Base | Representation |
---|---|
bin | 10011101011100110… |
… | …001000111101110101 |
3 | 2000112202112220012220 |
4 | 103223212020331311 |
5 | 321234410410031 |
6 | 13412543032553 |
7 | 1345453253325 |
oct | 235346107565 |
9 | 60482486186 |
10 | 21132513141 |
11 | 8a648309a3 |
12 | 411929b759 |
13 | 1cba20045c |
14 | 1046889285 |
15 | 83a3c5596 |
hex | 4eb988f75 |
21132513141 has 8 divisors (see below), whose sum is σ = 28181063040. Its totient is φ = 14086152672.
The previous prime is 21132513131. The next prime is 21132513169. The reversal of 21132513141 is 14131523112.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 21132513141 - 210 = 21132512117 is a prime.
It is a super-2 number, since 2×211325131412 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21132513131) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524701 + ... + 563538.
It is an arithmetic number, because the mean of its divisors is an integer number (3522632880).
Almost surely, 221132513141 is an apocalyptic number.
It is an amenable number.
21132513141 is a deficient number, since it is larger than the sum of its proper divisors (7048549899).
21132513141 is a wasteful number, since it uses less digits than its factorization.
21132513141 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1094715.
The product of its digits is 720, while the sum is 24.
The spelling of 21132513141 in words is "twenty-one billion, one hundred thirty-two million, five hundred thirteen thousand, one hundred forty-one".
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