Base | Representation |
---|---|
bin | 11001011111111111… |
… | …11010111110100111 |
3 | 1022100002111120222102 |
4 | 30233333322332213 |
5 | 211014142001222 |
6 | 10142244122315 |
7 | 663153450431 |
oct | 145777727647 |
9 | 38302446872 |
10 | 13690187687 |
11 | 5895832700 |
12 | 27a099639b |
13 | 13a2386a97 |
14 | 93c2ab651 |
15 | 551d36d92 |
hex | 32fffafa7 |
13690187687 has 24 divisors (see below), whose sum is σ = 15166788000. Its totient is φ = 12347691840.
The previous prime is 13690187647. The next prime is 13690187767. The reversal of 13690187687 is 78678109631.
It is not a de Polignac number, because 13690187687 - 210 = 13690186663 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13690187647) 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, 12255653 + ... + 12256769.
It is an arithmetic number, because the mean of its divisors is an integer number (631949500).
Almost surely, 213690187687 is an apocalyptic number.
13690187687 is a deficient number, since it is larger than the sum of its proper divisors (1476600313).
13690187687 is a wasteful number, since it uses less digits than its factorization.
13690187687 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1847 (or 1836 counting only the distinct ones).
The product of its (nonzero) digits is 3048192, while the sum is 56.
The spelling of 13690187687 in words is "thirteen billion, six hundred ninety million, one hundred eighty-seven thousand, six hundred eighty-seven".
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