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6985036143 = 3217431061717
BaseRepresentation
bin1101000000101011…
…10011000101101111
3200000210120121020100
412200111303011233
5103301132124033
63113041322143
7335044553601
oct64025630557
920023517210
106985036143
112a64964048
12142b336353
13874196ba7
144a3983171
152ad360513
hex1a057316f

6985036143 has 24 divisors (see below), whose sum is σ = 10931448528. Its totient is φ = 4280838912.

The previous prime is 6985036117. The next prime is 6985036159. The reversal of 6985036143 is 3416305896.

It is not a de Polignac number, because 6985036143 - 28 = 6985035887 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6985036103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 524280 + ... + 537437.

It is an arithmetic number, because the mean of its divisors is an integer number (455477022).

Almost surely, 26985036143 is an apocalyptic number.

6985036143 is a deficient number, since it is larger than the sum of its proper divisors (3946412385).

6985036143 is a wasteful number, since it uses less digits than its factorization.

6985036143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061783 (or 1061780 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 6985036143 is about 83576.5286608627. The cubic root of 6985036143 is about 1911.5671232501.

The spelling of 6985036143 in words is "six billion, nine hundred eighty-five million, thirty-six thousand, one hundred forty-three".

Divisors: 1 3 9 17 43 51 129 153 387 731 2193 6579 1061717 3185151 9555453 18049189 45653831 54147567 136961493 162442701 410884479 776115127 2328345381 6985036143