Base | Representation |
---|---|
bin | 110101011011111111… |
… | …111001111010110000 |
3 | 12111002202221010202000 |
4 | 311123333321322300 |
5 | 1420002240210213 |
6 | 42205322454000 |
7 | 4100611260465 |
oct | 653377717260 |
9 | 174082833660 |
10 | 57378053808 |
11 | 22374463089 |
12 | b153964300 |
13 | 55454a203a |
14 | 2ac457b66c |
15 | 175c489c73 |
hex | d5bff9eb0 |
57378053808 has 80 divisors (see below), whose sum is σ = 164755630560. Its totient is φ = 19119124224.
The previous prime is 57378053797. The next prime is 57378053893. The reversal of 57378053808 is 80835087375.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1254966 + ... + 1299882.
It is an arithmetic number, because the mean of its divisors is an integer number (2059445382).
Almost surely, 257378053808 is an apocalyptic number.
It is an amenable number.
57378053808 is an abundant number, since it is smaller than the sum of its proper divisors (107377576752).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
57378053808 is a wasteful number, since it uses less digits than its factorization.
57378053808 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 47891 (or 47879 counting only the distinct ones).
The product of its (nonzero) digits is 5644800, while the sum is 54.
The spelling of 57378053808 in words is "fifty-seven billion, three hundred seventy-eight million, fifty-three thousand, eight hundred eight".
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