Base | Representation |
---|---|
bin | 100000000101101101… |
… | …0010001001000000000 |
3 | 20120212112001001000000 |
4 | 1000023122101020000 |
5 | 2112112143141000 |
6 | 51353544000000 |
7 | 4656451041660 |
oct | 1001332211000 |
9 | 216775031000 |
10 | 68910912000 |
11 | 27252460147 |
12 | 11432160000 |
13 | 6662917698 |
14 | 349a1181a0 |
15 | 1bd4bd3000 |
hex | 100b691200 |
68910912000 has 1120 divisors, whose sum is σ = 295832744064. Its totient is φ = 15676416000.
The previous prime is 68910911989. The next prime is 68910912001. The reversal of 68910912000 is 21901986.
It is a tau number, because it is divible by the number of its divisors (1120).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (68910912001) by changing a digit.
It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 326591895 + ... + 326592105.
Almost surely, 268910912000 is an apocalyptic number.
68910912000 is a gapful number since it is divisible by the number (60) 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 68910912000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147916372032).
68910912000 is an abundant number, since it is smaller than the sum of its proper divisors (226921832064).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68910912000 is an frugal number, since it uses more digits than its factorization.
68910912000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 269 (or 228 counting only the distinct ones).
The product of its (nonzero) digits is 7776, while the sum is 36.
The spelling of 68910912000 in words is "sixty-eight billion, nine hundred ten million, nine hundred twelve thousand".
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