Base | Representation |
---|---|
bin | 11000001011011011… |
… | …01101000010111101 |
3 | 1020111122121101102122 |
4 | 30011231231002331 |
5 | 203041034101312 |
6 | 5544022532325 |
7 | 636450500312 |
oct | 140555550275 |
9 | 36448541378 |
10 | 12980768957 |
11 | 556133a932 |
12 | 26232970a5 |
13 | 12bb3ca5a0 |
14 | 8b1da0d09 |
15 | 50e903b72 |
hex | 305b6d0bd |
12980768957 has 16 divisors (see below), whose sum is σ = 14862331008. Its totient is φ = 11245016640.
The previous prime is 12980768929. The next prime is 12980768971. The reversal of 12980768957 is 75986708921.
It is not a de Polignac number, because 12980768957 - 220 = 12979720381 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 12980768957.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12980768917) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393719 + ... + 425412.
It is an arithmetic number, because the mean of its divisors is an integer number (928895688).
Almost surely, 212980768957 is an apocalyptic number.
It is an amenable number.
12980768957 is a deficient number, since it is larger than the sum of its proper divisors (1881562051).
12980768957 is a wasteful number, since it uses less digits than its factorization.
12980768957 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 819220.
The product of its (nonzero) digits is 15240960, while the sum is 62.
The spelling of 12980768957 in words is "twelve billion, nine hundred eighty million, seven hundred sixty-eight thousand, nine hundred fifty-seven".
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