Base | Representation |
---|---|
bin | 11000101001001001… |
… | …01110010000010011 |
3 | 1021011000201100002012 |
4 | 30110210232100103 |
5 | 204043344312401 |
6 | 10024450213135 |
7 | 645565522652 |
oct | 142444562023 |
9 | 37130640065 |
10 | 13230072851 |
11 | 567a038606 |
12 | 26928841ab |
13 | 132ac58198 |
14 | 8d7139199 |
15 | 52674b8bb |
hex | 31492e413 |
13230072851 has 4 divisors (see below), whose sum is σ = 13239710112. Its totient is φ = 13220435592.
The previous prime is 13230072839. The next prime is 13230072871. The reversal of 13230072851 is 15827003231.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15827003231 = 13 ⋅1217461787.
It is a cyclic number.
It is not a de Polignac number, because 13230072851 - 26 = 13230072787 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (13230072871) 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, 4816571 + ... + 4819316.
It is an arithmetic number, because the mean of its divisors is an integer number (3309927528).
Almost surely, 213230072851 is an apocalyptic number.
13230072851 is a deficient number, since it is larger than the sum of its proper divisors (9637261).
13230072851 is an equidigital number, since it uses as much as digits as its factorization.
13230072851 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9637260.
The product of its (nonzero) digits is 10080, while the sum is 32.
The spelling of 13230072851 in words is "thirteen billion, two hundred thirty million, seventy-two thousand, eight hundred fifty-one".
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