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68353026830 = 25112309269117
BaseRepresentation
bin111111101010001010…
…000110101100001110
320112102122021112102022
4333222022012230032
52104441333324310
651222334330142
74636565066414
oct775212065416
9215378245368
1068353026830
1126a96557820
12112b7359952
1365a417610a
143445db52b4
151ba0c33a55
hexfea286b0e

68353026830 has 32 divisors (see below), whose sum is σ = 134279117280. Its totient is φ = 24844789120.

The previous prime is 68353026829. The next prime is 68353026869. The reversal of 68353026830 is 3862035386.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119432 + ... + 388548.

It is an arithmetic number, because the mean of its divisors is an integer number (4196222415).

Almost surely, 268353026830 is an apocalyptic number.

68353026830 is a deficient number, since it is larger than the sum of its proper divisors (65926090450).

68353026830 is a wasteful number, since it uses less digits than its factorization.

68353026830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271444.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 68353026830 in words is "sixty-eight billion, three hundred fifty-three million, twenty-six thousand, eight hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 2309 4618 11545 23090 25399 50798 126995 253990 269117 538234 1345585 2691170 2960287 5920574 14801435 29602870 621391153 1242782306 3106955765 6213911530 6835302683 13670605366 34176513415 68353026830