Base | Representation |
---|---|
bin | 10011110100000000001… |
… | …10101110111010010111 |
3 | 2102002010220220102202002 |
4 | 21322000012232322113 |
5 | 42123141021101211 |
6 | 1240422322305515 |
7 | 100116502134524 |
oct | 11720006567227 |
9 | 2362126812662 |
10 | 680754081431 |
11 | 242784a28176 |
12 | abb271b829b |
13 | 4c26c088748 |
14 | 24d3d23414b |
15 | 12a9464303b |
hex | 9e801aee97 |
680754081431 has 2 divisors, whose sum is σ = 680754081432. Its totient is φ = 680754081430.
The previous prime is 680754081389. The next prime is 680754081451. The reversal of 680754081431 is 134180457086.
680754081431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 680754081431 - 26 = 680754081367 is a prime.
It is a super-2 number, since 2×6807540814312 (a number of 24 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (680754081451) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340377040715 + 340377040716.
It is an arithmetic number, because the mean of its divisors is an integer number (340377040716).
Almost surely, 2680754081431 is an apocalyptic number.
680754081431 is a deficient number, since it is larger than the sum of its proper divisors (1).
680754081431 is an equidigital number, since it uses as much as digits as its factorization.
680754081431 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 645120, while the sum is 47.
The spelling of 680754081431 in words is "six hundred eighty billion, seven hundred fifty-four million, eighty-one thousand, four hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.085 sec. • engine limits •