Base | Representation |
---|---|
bin | 10111010010011010… |
… | …10011110111001001 |
3 | 1012021022200120112111 |
4 | 23221031103313021 |
5 | 201101120441040 |
6 | 5424340142321 |
7 | 621552424321 |
oct | 135115236711 |
9 | 35238616474 |
10 | 12502515145 |
11 | 533638674a |
12 | 250b0979a1 |
13 | 12432ba673 |
14 | 86866a281 |
15 | 4d2933dea |
hex | 2e9353dc9 |
12502515145 has 16 divisors (see below), whose sum is σ = 15669067392. Its totient is φ = 9558743040.
The previous prime is 12502515143. The next prime is 12502515149. The reversal of 12502515145 is 54151520521.
It is not a de Polignac number, because 12502515145 - 21 = 12502515143 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12502515143) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85450 + ... + 179740.
It is an arithmetic number, because the mean of its divisors is an integer number (979316712).
Almost surely, 212502515145 is an apocalyptic number.
It is an amenable number.
12502515145 is a deficient number, since it is larger than the sum of its proper divisors (3166552247).
12502515145 is a wasteful number, since it uses less digits than its factorization.
12502515145 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 95472.
The product of its (nonzero) digits is 10000, while the sum is 31.
The spelling of 12502515145 in words is "twelve billion, five hundred two million, five hundred fifteen thousand, one hundred forty-five".
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