Base | Representation |
---|---|
bin | 10111111111100110… |
… | …01010001100101100 |
3 | 1020020201212211010002 |
4 | 23333303022030230 |
5 | 202340133121123 |
6 | 5530120003432 |
7 | 634134150632 |
oct | 137763121454 |
9 | 36221784102 |
10 | 12881535788 |
11 | 5510322550 |
12 | 25b6000578 |
13 | 12a3994b34 |
14 | 8a2b2d352 |
15 | 505d51528 |
hex | 2ffcca32c |
12881535788 has 12 divisors (see below), whose sum is σ = 24592022952. Its totient is φ = 5855243520.
The previous prime is 12881535787. The next prime is 12881535809. The reversal of 12881535788 is 88753518821.
It is not an unprimeable number, because it can be changed into a prime (12881535787) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146381045 + ... + 146381132.
It is an arithmetic number, because the mean of its divisors is an integer number (2049335246).
Almost surely, 212881535788 is an apocalyptic number.
It is an amenable number.
12881535788 is a deficient number, since it is larger than the sum of its proper divisors (11710487164).
12881535788 is a wasteful number, since it uses less digits than its factorization.
12881535788 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 292762192 (or 292762190 counting only the distinct ones).
The product of its digits is 4300800, while the sum is 56.
The spelling of 12881535788 in words is "twelve billion, eight hundred eighty-one million, five hundred thirty-five thousand, seven hundred eighty-eight".
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