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68108613970 = 2521313196087
BaseRepresentation
bin111111011011100101…
…101111100101010010
320111210121101002000011
4333123211233211102
52103441301121340
651142203545134
74630536444445
oct773345574522
9214717332004
1068108613970
112698059a821
121124952b1aa
13656563b817
14342175165c
151b895550ea
hexfdb96f952

68108613970 has 16 divisors (see below), whose sum is σ = 122653073088. Its totient is φ = 27230652720.

The previous prime is 68108613919. The next prime is 68108613983. The reversal of 68108613970 is 7931680186.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1576734 + ... + 1619353.

It is an arithmetic number, because the mean of its divisors is an integer number (7665817068).

Almost surely, 268108613970 is an apocalyptic number.

68108613970 is a deficient number, since it is larger than the sum of its proper divisors (54544459118).

68108613970 is a wasteful number, since it uses less digits than its factorization.

68108613970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198225.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 68108613970 in words is "sixty-eight billion, one hundred eight million, six hundred thirteen thousand, nine hundred seventy".

Divisors: 1 2 5 10 2131 4262 10655 21310 3196087 6392174 15980435 31960870 6810861397 13621722794 34054306985 68108613970