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67909642070 = 257129952583
BaseRepresentation
bin111111001111101110…
…101110011101010110
320111021201222020212112
4333033232232131112
52103034332021240
651110335151022
74622602301444
oct771756563526
9214251866775
1067909642070
112688924a236
12111b2975472
13653335447a
143403159b94
151b76d50665
hexfcfbae756

67909642070 has 16 divisors (see below), whose sum is σ = 122254630560. Its totient is φ = 27160017984.

The previous prime is 67909641907. The next prime is 67909642103. The reversal of 67909642070 is 7024690976.

It is a super-2 number, since 2×679096420702 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405002 + ... + 547581.

It is an arithmetic number, because the mean of its divisors is an integer number (7640914410).

Almost surely, 267909642070 is an apocalyptic number.

67909642070 is a deficient number, since it is larger than the sum of its proper divisors (54344988490).

67909642070 is a wasteful number, since it uses less digits than its factorization.

67909642070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959719.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The spelling of 67909642070 in words is "sixty-seven billion, nine hundred nine million, six hundred forty-two thousand, seventy".

Divisors: 1 2 5 10 7129 14258 35645 71290 952583 1905166 4762915 9525830 6790964207 13581928414 33954821035 67909642070