Base | Representation |
---|---|
bin | 111111010110111111… |
… | …101000000010101110 |
3 | 20111121020021221000102 |
4 | 333112333220002232 |
5 | 2103312031402000 |
6 | 51130411231102 |
7 | 4625612213525 |
oct | 772677500256 |
9 | 214536257012 |
10 | 68031512750 |
11 | 26941019503 |
12 | 11227748492 |
13 | 65526849b6 |
14 | 34154014bc |
15 | 1b828c53d5 |
hex | fd6fe80ae |
68031512750 has 32 divisors (see below), whose sum is σ = 127441562976. Its totient is φ = 27194107200.
The previous prime is 68031512723. The next prime is 68031512789. The reversal of 68031512750 is 5721513086.
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, 279002 + ... + 462498.
It is an arithmetic number, because the mean of its divisors is an integer number (3982548843).
Almost surely, 268031512750 is an apocalyptic number.
68031512750 is a deficient number, since it is larger than the sum of its proper divisors (59410050226).
68031512750 is a wasteful number, since it uses less digits than its factorization.
68031512750 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 184997 (or 184987 counting only the distinct ones).
The product of its (nonzero) digits is 50400, while the sum is 38.
The spelling of 68031512750 in words is "sixty-eight billion, thirty-one million, five hundred twelve thousand, seven hundred fifty".
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