Base | Representation |
---|---|
bin | 100000000100110100… |
… | …0100010000010001100 |
3 | 20120210102221021021222 |
4 | 1000021220202002030 |
5 | 2112032030044334 |
6 | 51351000542512 |
7 | 4655636443220 |
oct | 1001150420214 |
9 | 216712837258 |
10 | 68881096844 |
11 | 2723764661a |
12 | 11424181a38 |
13 | 66596a8891 |
14 | 3496196780 |
15 | 1bd2293d2e |
hex | 1009a2208c |
68881096844 has 48 divisors (see below), whose sum is σ = 145544878080. Its totient is φ = 27896070720.
The previous prime is 68881096829. The next prime is 68881096847. The reversal of 68881096844 is 44869018886.
It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.
It is not an unprimeable number, because it can be changed into a prime (68881096847) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 864272 + ... + 940599.
It is an arithmetic number, because the mean of its divisors is an integer number (3032184960).
Almost surely, 268881096844 is an apocalyptic number.
It is an amenable number.
68881096844 is an abundant number, since it is smaller than the sum of its proper divisors (76663781236).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68881096844 is a wasteful number, since it uses less digits than its factorization.
68881096844 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1804958 (or 1804956 counting only the distinct ones).
The product of its (nonzero) digits is 21233664, while the sum is 62.
The spelling of 68881096844 in words is "sixty-eight billion, eight hundred eighty-one million, ninety-six thousand, eight hundred forty-four".
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