Base | Representation |
---|---|
bin | 111111111011110010… |
… | …101010001011001111 |
3 | 20120012020221221210020 |
4 | 333323302222023033 |
5 | 2111043102324412 |
6 | 51311543313223 |
7 | 4650116525622 |
oct | 777362521317 |
9 | 216166857706 |
10 | 68648870607 |
11 | 27128552609 |
12 | 1137a44b813 |
13 | 662054a1c5 |
14 | 34733c5db9 |
15 | 1bbbbc118c |
hex | ffbcaa2cf |
68648870607 has 16 divisors (see below), whose sum is σ = 99457336320. Its totient is φ = 41958561600.
The previous prime is 68648870599. The next prime is 68648870611. The reversal of 68648870607 is 70607884686.
It is not a de Polignac number, because 68648870607 - 23 = 68648870599 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68648870617) 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, 19423494 + ... + 19427027.
It is an arithmetic number, because the mean of its divisors is an integer number (6216083520).
Almost surely, 268648870607 is an apocalyptic number.
68648870607 is a deficient number, since it is larger than the sum of its proper divisors (30808465713).
68648870607 is a wasteful number, since it uses less digits than its factorization.
68648870607 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 38850574.
The product of its (nonzero) digits is 21676032, while the sum is 60.
The spelling of 68648870607 in words is "sixty-eight billion, six hundred forty-eight million, eight hundred seventy thousand, six hundred seven".
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