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11969662668 = 22317232551079
BaseRepresentation
bin10110010010111001…
…01000111011001100
31010220012000212100120
423021130220323030
5144003213201133
65255423224540
7602422311465
oct131134507314
933805025316
1011969662668
1150926207a7
1223a0748150
131189aa2142
148179a1d6c
154a0c7bab3
hex2c9728ecc

11969662668 has 48 divisors (see below), whose sum is σ = 30857863680. Its totient is φ = 3591917824.

The previous prime is 11969662667. The next prime is 11969662699. The reversal of 11969662668 is 86626696911.

11969662668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11969662667) 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 15 ways as a sum of consecutive naturals, for example, 1270848 + ... + 1280231.

It is an arithmetic number, because the mean of its divisors is an integer number (642872160).

Almost surely, 211969662668 is an apocalyptic number.

It is an amenable number.

11969662668 is an abundant number, since it is smaller than the sum of its proper divisors (18888201012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11969662668 is a wasteful number, since it uses less digits than its factorization.

11969662668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551126 (or 2551124 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 60.

The spelling of 11969662668 in words is "eleven billion, nine hundred sixty-nine million, six hundred sixty-two thousand, six hundred sixty-eight".

Divisors: 1 2 3 4 6 12 17 23 34 46 51 68 69 92 102 138 204 276 391 782 1173 1564 2346 4692 2551079 5102158 7653237 10204316 15306474 30612948 43368343 58674817 86736686 117349634 130105029 173473372 176024451 234699268 260210058 352048902 520420116 704097804 997471889 1994943778 2992415667 3989887556 5984831334 11969662668