Base | Representation |
---|---|
bin | 11001011110110010… |
… | …00110100011011111 |
3 | 1022022101100120212010 |
4 | 30233121012203133 |
5 | 211004040331422 |
6 | 10141242042303 |
7 | 663001115262 |
oct | 145731064337 |
9 | 38271316763 |
10 | 13680011487 |
11 | 589001211a |
12 | 27994a9393 |
13 | 13a0232c6c |
14 | 93abbccd9 |
15 | 550ec6b0c |
hex | 32f6468df |
13680011487 has 16 divisors (see below), whose sum is σ = 18316529280. Its totient is φ = 9081800352.
The previous prime is 13680011479. The next prime is 13680011509. The reversal of 13680011487 is 78411008631.
It is not a de Polignac number, because 13680011487 - 23 = 13680011479 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13680011987) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1277128 + ... + 1287794.
It is an arithmetic number, because the mean of its divisors is an integer number (1144783080).
Almost surely, 213680011487 is an apocalyptic number.
13680011487 is a deficient number, since it is larger than the sum of its proper divisors (4636517793).
13680011487 is a wasteful number, since it uses less digits than its factorization.
13680011487 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12422.
The product of its (nonzero) digits is 32256, while the sum is 39.
The spelling of 13680011487 in words is "thirteen billion, six hundred eighty million, eleven thousand, four hundred eighty-seven".
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