Base | Representation |
---|---|
bin | 11000001011011100… |
… | …10000110010010101 |
3 | 1020111122212211020120 |
4 | 30011232100302111 |
5 | 203041103242344 |
6 | 5544030022153 |
7 | 636451650153 |
oct | 140556206225 |
9 | 36448784216 |
10 | 12980915349 |
11 | 556142a916 |
12 | 2623347959 |
13 | 12bb44c0cc |
14 | 8b1ddc3d3 |
15 | 50e932219 |
hex | 305b90c95 |
12980915349 has 16 divisors (see below), whose sum is σ = 18277060800. Its totient is φ = 8172268416.
The previous prime is 12980915347. The next prime is 12980915419. The reversal of 12980915349 is 94351908921.
It is not a de Polignac number, because 12980915349 - 21 = 12980915347 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12980915347) 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, 345954 + ... + 381635.
It is an arithmetic number, because the mean of its divisors is an integer number (1142316300).
Almost surely, 212980915349 is an apocalyptic number.
12980915349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.
It is an amenable number.
12980915349 is a deficient number, since it is larger than the sum of its proper divisors (5296145451).
12980915349 is a wasteful number, since it uses less digits than its factorization.
12980915349 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 727924.
The product of its (nonzero) digits is 699840, while the sum is 51.
The spelling of 12980915349 in words is "twelve billion, nine hundred eighty million, nine hundred fifteen thousand, three hundred forty-nine".
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