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6981119999 = 71138825689
BaseRepresentation
bin1101000000001101…
…10110111111111111
3200000112012122021222
412200012312333333
5103244131314444
63112421343555
7334666353350
oct64006667777
920015178258
106981119999
112a62729867
121429b67bbb
13873425549
144a3243d27
152acd39eee
hex1a01b6fff

6981119999 has 8 divisors (see below), whose sum is σ = 8049029280. Its totient is φ = 5930862336.

The previous prime is 6981119963. The next prime is 6981120001. The reversal of 6981119999 is 9999111896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-6981119999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6981119909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4412054 + ... + 4413635.

It is an arithmetic number, because the mean of its divisors is an integer number (1006128660).

Almost surely, 26981119999 is an apocalyptic number.

6981119999 is a deficient number, since it is larger than the sum of its proper divisors (1067909281).

6981119999 is a wasteful number, since it uses less digits than its factorization.

6981119999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8825809.

The product of its digits is 2834352, while the sum is 62.

The square root of 6981119999 is about 83553.0968845560. The cubic root of 6981119999 is about 1911.2098179382.

The spelling of 6981119999 in words is "six billion, nine hundred eighty-one million, one hundred nineteen thousand, nine hundred ninety-nine".

Divisors: 1 7 113 791 8825689 61779823 997302857 6981119999