Base | Representation |
---|---|
bin | 11001101011101011… |
… | …00110100011010111 |
3 | 1022120220211101100121 |
4 | 30311311212203113 |
5 | 211214231132004 |
6 | 10200103452411 |
7 | 665453210014 |
oct | 146565464327 |
9 | 38526741317 |
10 | 13788145879 |
11 | 593605a092 |
12 | 2809757107 |
13 | 13b9764101 |
14 | 94b2ca70b |
15 | 55a736854 |
hex | 335d668d7 |
13788145879 has 2 divisors, whose sum is σ = 13788145880. Its totient is φ = 13788145878.
The previous prime is 13788145771. The next prime is 13788145883. The reversal of 13788145879 is 97854188731.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 13788145879 - 213 = 13788137687 is a prime.
It is a super-2 number, since 2×137881458792 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13788148879) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6894072939 + 6894072940.
It is an arithmetic number, because the mean of its divisors is an integer number (6894072940).
Almost surely, 213788145879 is an apocalyptic number.
13788145879 is a deficient number, since it is larger than the sum of its proper divisors (1).
13788145879 is an equidigital number, since it uses as much as digits as its factorization.
13788145879 is an evil number, because the sum of its binary digits is even.
The product of its digits is 13547520, while the sum is 61.
The spelling of 13788145879 in words is "thirteen billion, seven hundred eighty-eight million, one hundred forty-five thousand, eight hundred seventy-nine".
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