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68646285430236 = 22323751536250323
BaseRepresentation
bin11111001101110111101010…
…11101010100110111011100
3100000001112001122211110011200
433212323311131110313130
532444200043032231421
6401555400154115500
720313346642450203
oct1746736535246734
9300045048743150
1068646285430236
111a9667a957a718
12784813a11bb90
132c3c417417397
1412d46d84d623a
157e09aa087726
hex3e6ef5754ddc

68646285430236 has 36 divisors (see below), whose sum is σ = 178212353620392. Its totient is φ = 22263660139104.

The previous prime is 68646285430223. The next prime is 68646285430237. The reversal of 68646285430236 is 63203458264686.

68646285430236 is a `hidden beast` number, since 6 + 8 + 6 + 4 + 62 + 8 + 543 + 0 + 23 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68646285430237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25768123830 + ... + 25768126493.

It is an arithmetic number, because the mean of its divisors is an integer number (4950343156122).

Almost surely, 268646285430236 is an apocalyptic number.

It is an amenable number.

68646285430236 is an abundant number, since it is smaller than the sum of its proper divisors (109566068190156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68646285430236 is a wasteful number, since it uses less digits than its factorization.

68646285430236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51536250370 (or 51536250365 counting only the distinct ones).

The product of its (nonzero) digits is 238878720, while the sum is 63.

The spelling of 68646285430236 in words is "sixty-eight trillion, six hundred forty-six billion, two hundred eighty-five million, four hundred thirty thousand, two hundred thirty-six".

Divisors: 1 2 3 4 6 9 12 18 36 37 74 111 148 222 333 444 666 1332 51536250323 103072500646 154608750969 206145001292 309217501938 463826252907 618435003876 927652505814 1855305011628 1906841261951 3813682523902 5720523785853 7627365047804 11441047571706 17161571357559 22882095143412 34323142715118 68646285430236