Base | Representation |
---|---|
bin | 10011010101111000010… |
… | …00111010010101111100 |
3 | 2100112101211011220221020 |
4 | 21222330020322111330 |
5 | 41342030320310231 |
6 | 1225145434104140 |
7 | 66004642555416 |
oct | 11527410722574 |
9 | 2315354156836 |
10 | 664581416316 |
11 | 23693597a534 |
12 | a8972b7b050 |
13 | 4a8925c910c |
14 | 242473979b6 |
15 | 124498e2396 |
hex | 9abc23a57c |
664581416316 has 48 divisors (see below), whose sum is σ = 1553402484480. Its totient is φ = 221139797760.
The previous prime is 664581416309. The next prime is 664581416333. The reversal of 664581416316 is 613614185466.
It is a super-2 number, since 2×6645814163162 (a number of 24 digits) contains 22 as substring.
It is a congruent number.
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, 51245265 + ... + 51258231.
It is an arithmetic number, because the mean of its divisors is an integer number (32362551760).
Almost surely, 2664581416316 is an apocalyptic number.
It is an amenable number.
664581416316 is an abundant number, since it is smaller than the sum of its proper divisors (888821068164).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
664581416316 is a wasteful number, since it uses less digits than its factorization.
664581416316 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 20114 (or 20112 counting only the distinct ones).
The product of its digits is 2488320, while the sum is 51.
The spelling of 664581416316 in words is "six hundred sixty-four billion, five hundred eighty-one million, four hundred sixteen thousand, three hundred sixteen".
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