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68298975171 = 337361370239
BaseRepresentation
bin111111100110111011…
…111010011111000011
320112021212120102111000
4333212323322133003
52104334014201141
651213124023043
74635340465410
oct774673723703
9215255512430
1068298975171
1126a68a99a29
12112a1231a83
136595bcc79b
14343cb45107
151b9b1085b6
hexfe6efa7c3

68298975171 has 16 divisors (see below), whose sum is σ = 115638476800. Its totient is φ = 39027985704.

The previous prime is 68298975169. The next prime is 68298975179. The reversal of 68298975171 is 17157989286.

68298975171 is a `hidden beast` number, since 6 + 8 + 29 + 8 + 97 + 517 + 1 = 666.

It is not a de Polignac number, because 68298975171 - 21 = 68298975169 is a prime.

It is a super-3 number, since 3×682989751713 (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 68298975099 and 68298975108.

It is not an unprimeable number, because it can be changed into a prime (68298975179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180684931 + ... + 180685308.

It is an arithmetic number, because the mean of its divisors is an integer number (7227404800).

Almost surely, 268298975171 is an apocalyptic number.

68298975171 is a deficient number, since it is larger than the sum of its proper divisors (47339501629).

68298975171 is a wasteful number, since it uses less digits than its factorization.

68298975171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361370255 (or 361370249 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 63.

The spelling of 68298975171 in words is "sixty-eight billion, two hundred ninety-eight million, nine hundred seventy-five thousand, one hundred seventy-one".

Divisors: 1 3 7 9 21 27 63 189 361370239 1084110717 2529591673 3252332151 7588775019 9756996453 22766325057 68298975171