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68310364386 = 23112337279203
BaseRepresentation
bin111111100111100111…
…010111000011100010
320112022200000001112210
4333213213113003202
52104344423130021
651214212102550
74635536342205
oct774747270342
9215280001483
1068310364386
1126a74468900
12112a5004a56
136598389774
14344046b93c
151b9c107e76
hexfe79d70e2

68310364386 has 48 divisors (see below), whose sum is σ = 150616039392. Its totient is φ = 20638611840.

The previous prime is 68310364357. The next prime is 68310364411. The reversal of 68310364386 is 68346301386.

It is a happy number.

It is a super-3 number, since 3×683103643863 (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105061 + ... + 384263.

It is an arithmetic number, because the mean of its divisors is an integer number (3137834154).

Almost surely, 268310364386 is an apocalyptic number.

68310364386 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 68310364386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75308019696).

68310364386 is an abundant number, since it is smaller than the sum of its proper divisors (82305675006).

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

68310364386 is a wasteful number, since it uses less digits than its factorization.

68310364386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279567 (or 279556 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 48.

Subtracting 68310364386 from its reverse (68346301386), we obtain a cube (35937000 = 3303).

The spelling of 68310364386 in words is "sixty-eight billion, three hundred ten million, three hundred sixty-four thousand, three hundred eighty-six".

Divisors: 1 2 3 6 11 22 33 66 121 242 337 363 674 726 1011 2022 3707 7414 11121 22242 40777 81554 122331 244662 279203 558406 837609 1675218 3071233 6142466 9213699 18427398 33783563 67567126 94091411 101350689 188182822 202701378 282274233 564548466 1035005521 2070011042 3105016563 6210033126 11385060731 22770121462 34155182193 68310364386