Base | Representation |
---|---|
bin | 10111010010000111… |
… | …01110000001101111 |
3 | 1012021010221211121112 |
4 | 23221003232001233 |
5 | 201100000012004 |
6 | 5424210222235 |
7 | 621522153152 |
oct | 135103560157 |
9 | 35233854545 |
10 | 12500000879 |
11 | 5334a19743 |
12 | 250a28497b |
13 | 124291a132 |
14 | 8681b3c99 |
15 | 4d25d8e6e |
hex | 2e90ee06f |
12500000879 has 2 divisors, whose sum is σ = 12500000880. Its totient is φ = 12500000878.
The previous prime is 12500000753. The next prime is 12500000881. The reversal of 12500000879 is 97800000521.
It is a strong prime.
It is an emirp because it is prime and its reverse (97800000521) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12500000879 is a prime.
Together with 12500000881, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12500005879) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250000439 + 6250000440.
It is an arithmetic number, because the mean of its divisors is an integer number (6250000440).
Almost surely, 212500000879 is an apocalyptic number.
12500000879 is a deficient number, since it is larger than the sum of its proper divisors (1).
12500000879 is an equidigital number, since it uses as much as digits as its factorization.
12500000879 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 5040, while the sum is 32.
The spelling of 12500000879 in words is "twelve billion, five hundred million, eight hundred seventy-nine", and thus it is an aban number.
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.076 sec. • engine limits •