| Base | Representation |
|---|---|
| bin | 1001110010100001100… |
| … | …1100100001011010100 |
| 3 | 121002002212012011121200 |
| 4 | 2130220121210023110 |
| 5 | 10223413431434324 |
| 6 | 205132253312500 |
| 7 | 15102460201341 |
| oct | 2345031441324 |
| 9 | 532085164550 |
| 10 | 168181514964 |
| 11 | 65364098481 |
| 12 | 28717795730 |
| 13 | 12b23294338 |
| 14 | 81d634b7c8 |
| 15 | 4594d8eec9 |
| hex | 27286642d4 |
168181514964 has 72 divisors (see below), whose sum is σ = 450698969448. Its totient is φ = 52696473600.
The previous prime is 168181514957. The next prime is 168181514971. The reversal of 168181514964 is 469415181861.
168181514964 is a `hidden beast` number, since 1 + 68 + 1 + 8 + 1 + 514 + 9 + 64 = 666.
168181514964 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (168181514957) and next prime (168181514971).
It can be written as a sum of positive squares in 4 ways, for example, as 32794312464 + 135387202500 = 181092^2 + 367950^2 .
It is a self number, because there is not a number n which added to its sum of digits gives 168181514964.
It is a congruent number.
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, 315364 + ... + 660164.
It is an arithmetic number, because the mean of its divisors is an integer number (6259707909).
Almost surely, 2168181514964 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 168181514964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225349484724).
168181514964 is an abundant number, since it is smaller than the sum of its proper divisors (282517454484).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
168181514964 is a wasteful number, since it uses less digits than its factorization.
168181514964 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 345625 (or 345620 counting only the distinct ones).
The product of its digits is 1658880, while the sum is 54.
The spelling of 168181514964 in words is "one hundred sixty-eight billion, one hundred eighty-one million, five hundred fourteen thousand, nine hundred sixty-four".
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