Base | Representation |
---|---|
bin | 10111111101000101… |
… | …00000000011100011 |
3 | 1020012021002120210220 |
4 | 23332202200003203 |
5 | 202314230013101 |
6 | 5524042454123 |
7 | 633456345132 |
oct | 137642400343 |
9 | 36167076726 |
10 | 12860391651 |
11 | 54aa3a0658 |
12 | 25aab04343 |
13 | 129c4a0a03 |
14 | 89ddc7919 |
15 | 504076636 |
hex | 2fe8a00e3 |
12860391651 has 8 divisors (see below), whose sum is σ = 17147959824. Its totient is φ = 8573208960.
The previous prime is 12860391641. The next prime is 12860391671. The reversal of 12860391651 is 15619306821.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 12860391651 - 25 = 12860391619 is a prime.
It is a super-2 number, since 2×128603916512 (a number of 21 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (12860391641) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6570 + ... + 160511.
It is an arithmetic number, because the mean of its divisors is an integer number (2143494978).
Almost surely, 212860391651 is an apocalyptic number.
12860391651 is a deficient number, since it is larger than the sum of its proper divisors (4287568173).
12860391651 is a wasteful number, since it uses less digits than its factorization.
12860391651 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 192741.
The product of its (nonzero) digits is 77760, while the sum is 42.
The spelling of 12860391651 in words is "twelve billion, eight hundred sixty million, three hundred ninety-one thousand, six hundred fifty-one".
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