Base | Representation |
---|---|
bin | 11000011111000101… |
… | …11010111110011111 |
3 | 1020221010222111022012 |
4 | 30033202322332133 |
5 | 203410300331331 |
6 | 10012234141435 |
7 | 643522505342 |
oct | 141742727637 |
9 | 36833874265 |
10 | 13145714591 |
11 | 563645aa39 |
12 | 266a58187b |
13 | 1316630159 |
14 | 8c9c5a459 |
15 | 51e13682b |
hex | 30f8baf9f |
13145714591 has 4 divisors (see below), whose sum is σ = 13273342992. Its totient is φ = 13018086192.
The previous prime is 13145714581. The next prime is 13145714609. The reversal of 13145714591 is 19541754131.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19541754131 = 33641 ⋅580891.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-13145714591 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 (13145714521) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63814046 + ... + 63814251.
It is an arithmetic number, because the mean of its divisors is an integer number (3318335748).
Almost surely, 213145714591 is an apocalyptic number.
13145714591 is a deficient number, since it is larger than the sum of its proper divisors (127628401).
13145714591 is a wasteful number, since it uses less digits than its factorization.
13145714591 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 127628400.
The product of its digits is 75600, while the sum is 41.
The spelling of 13145714591 in words is "thirteen billion, one hundred forty-five million, seven hundred fourteen thousand, five hundred ninety-one".
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