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68395313546 = 2717287375267
BaseRepresentation
bin111111101100101011…
…011010100110001010
320112112120211220212222
4333230223122212022
52110033200013141
651230444534042
74640620400330
oct775453324612
9215476756788
1068395313546
112700840a41a
1211309551322
1365acb60741
14344b861b50
151ba47d814b
hexfecada98a

68395313546 has 16 divisors (see below), whose sum is σ = 124146115776. Its totient is φ = 27588025536.

The previous prime is 68395313543. The next prime is 68395313549. The reversal of 68395313546 is 64531359386.

It is an interprime number because it is at equal distance from previous prime (68395313543) and next prime (68395313549).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68395313543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143687396 + ... + 143687871.

It is an arithmetic number, because the mean of its divisors is an integer number (7759132236).

Almost surely, 268395313546 is an apocalyptic number.

68395313546 is a deficient number, since it is larger than the sum of its proper divisors (55750802230).

68395313546 is a wasteful number, since it uses less digits than its factorization.

68395313546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287375293.

The product of its digits is 6998400, while the sum is 53.

The spelling of 68395313546 in words is "sixty-eight billion, three hundred ninety-five million, three hundred thirteen thousand, five hundred forty-six".

Divisors: 1 2 7 14 17 34 119 238 287375267 574750534 2011626869 4023253738 4885379539 9770759078 34197656773 68395313546