Base | Representation |
---|---|
bin | 11101001011110111… |
… | …11011110100011100 |
3 | 1111102222201020221120 |
4 | 32211323323310130 |
5 | 224042211312134 |
6 | 11110445530540 |
7 | 1063201030134 |
oct | 164573736434 |
9 | 44388636846 |
10 | 15668854044 |
11 | 6710728a58 |
12 | 3053573a50 |
13 | 16292a198c |
14 | a88db1ac4 |
15 | 61a8d3649 |
hex | 3a5efbd1c |
15668854044 has 24 divisors (see below), whose sum is σ = 36562704528. Its totient is φ = 5222659200.
The previous prime is 15668854043. The next prime is 15668854199. The reversal of 15668854044 is 44045886651.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (15668854043) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353944 + ... + 395744.
It is an arithmetic number, because the mean of its divisors is an integer number (1523446022).
Almost surely, 215668854044 is an apocalyptic number.
It is an amenable number.
15668854044 is an abundant number, since it is smaller than the sum of its proper divisors (20893850484).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15668854044 is a wasteful number, since it uses less digits than its factorization.
15668854044 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 73045 (or 73043 counting only the distinct ones).
The product of its (nonzero) digits is 3686400, while the sum is 51.
The spelling of 15668854044 in words is "fifteen billion, six hundred sixty-eight million, eight hundred fifty-four thousand, forty-four".
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