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68956734286 = 21122312388921
BaseRepresentation
bin100000000111000100…
…1000100001101001110
320120222201021001100201
41000032021010031032
52112210410444121
651402302044114
74660545366436
oct1001611041516
9216881231321
1068956734286
1127276308100
121144557963a
13666c26c36b
1434a22452c6
151bd8c34e91
hex100e24434e

68956734286 has 24 divisors (see below), whose sum is σ = 118636317072. Its totient is φ = 29981186400.

The previous prime is 68956734229. The next prime is 68956734289. The reversal of 68956734286 is 68243765986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68956734289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6188895 + ... + 6200026.

It is an arithmetic number, because the mean of its divisors is an integer number (4943179878).

Almost surely, 268956734286 is an apocalyptic number.

68956734286 is a deficient number, since it is larger than the sum of its proper divisors (49679582786).

68956734286 is a wasteful number, since it uses less digits than its factorization.

68956734286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12388968 (or 12388957 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 64.

The spelling of 68956734286 in words is "sixty-eight billion, nine hundred fifty-six million, seven hundred thirty-four thousand, two hundred eighty-six".

Divisors: 1 2 11 22 23 46 121 242 253 506 2783 5566 12388921 24777842 136278131 272556262 284945183 569890366 1499059441 2998118882 3134397013 6268794026 34478367143 68956734286