Base | Representation |
---|---|
bin | 10111111101000110… |
… | …10100100100101001 |
3 | 1020012021111111212221 |
4 | 23332203110210221 |
5 | 202314303404021 |
6 | 5524051234041 |
7 | 633461232232 |
oct | 137643244451 |
9 | 36167444787 |
10 | 12860606761 |
11 | 54aa528232 |
12 | 25aaba8921 |
13 | 129c5478b2 |
14 | 8a0042089 |
15 | 5040ba241 |
hex | 2fe8d4929 |
12860606761 has 2 divisors, whose sum is σ = 12860606762. Its totient is φ = 12860606760.
The previous prime is 12860606723. The next prime is 12860606813. The reversal of 12860606761 is 16760606821.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 11964203161 + 896403600 = 109381^2 + 29940^2 .
It is a cyclic number.
It is not a de Polignac number, because 12860606761 - 217 = 12860475689 is a prime.
It is a super-2 number, since 2×128606067612 (a number of 21 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (12860606701) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6430303380 + 6430303381.
It is an arithmetic number, because the mean of its divisors is an integer number (6430303381).
Almost surely, 212860606761 is an apocalyptic number.
It is an amenable number.
12860606761 is a deficient number, since it is larger than the sum of its proper divisors (1).
12860606761 is an equidigital number, since it uses as much as digits as its factorization.
12860606761 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 145152, while the sum is 43.
The spelling of 12860606761 in words is "twelve billion, eight hundred sixty million, six hundred six thousand, seven hundred sixty-one".
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