| Base | Representation |
|---|---|
| bin | 11000101101001101100… |
| … | …110010111001010000000 |
| 3 | 20000022100120112200211200 |
| 4 | 120231031212113022000 |
| 5 | 210304110334440442 |
| 6 | 3335544233541200 |
| 7 | 233443261514466 |
| oct | 30551546271200 |
| 9 | 6008316480750 |
| 10 | 1697813983872 |
| 11 | 5a5047806296 |
| 12 | 23506a574800 |
| 13 | c414588c0c6 |
| 14 | 5c2632b0836 |
| 15 | 2e26d96534c |
| hex | 18b4d997280 |
1697813983872 has 192 divisors, whose sum is σ = 5202939254760. Its totient is φ = 529567580160.
The previous prime is 1697813983843. The next prime is 1697813983897. The reversal of 1697813983872 is 2783893187961.
1697813983872 is a `hidden beast` number, since 1 + 6 + 97 + 81 + 398 + 3 + 8 + 72 = 666.
It can be written as a sum of positive squares in 4 ways, for example, as 1552177106496 + 145636877376 = 1245864^2 + 381624^2 .
It is a tau number, because it is divible by the number of its divisors (192).
It is a super-2 number, since 2×16978139838722 (a number of 25 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (72).
It is a self number, because there is not a number n which added to its sum of digits gives 1697813983872.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3137472 + ... + 3638592.
Almost surely, 21697813983872 is an apocalyptic number.
1697813983872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1697813983872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2601469627380).
1697813983872 is an abundant number, since it is smaller than the sum of its proper divisors (3505125270888).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1697813983872 is a wasteful number, since it uses less digits than its factorization.
1697813983872 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 501331 (or 501316 counting only the distinct ones).
The product of its digits is 219469824, while the sum is 72.
The spelling of 1697813983872 in words is "one trillion, six hundred ninety-seven billion, eight hundred thirteen million, nine hundred eighty-three thousand, eight hundred seventy-two".
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