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12159707385 = 357176812161
BaseRepresentation
bin10110101001100011…
…00110100011111001
31011101102122010200210
423110301212203321
5144400341114020
65330332421333
7610220543640
oct132461464371
934342563623
1012159707385
11517a924151
122434317849
1311ba282037
14834d12357
154b27bb3e0
hex2d4c668f9

12159707385 has 32 divisors (see below), whose sum is σ = 23542831872. Its totient is φ = 5231738880.

The previous prime is 12159707363. The next prime is 12159707423. The reversal of 12159707385 is 58370795121.

It is not a de Polignac number, because 12159707385 - 25 = 12159707353 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3404296 + ... + 3407865.

It is an arithmetic number, because the mean of its divisors is an integer number (735713496).

Almost surely, 212159707385 is an apocalyptic number.

12159707385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12159707385 is a deficient number, since it is larger than the sum of its proper divisors (11383124487).

12159707385 is a wasteful number, since it uses less digits than its factorization.

12159707385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6812193.

The product of its (nonzero) digits is 529200, while the sum is 48.

The spelling of 12159707385 in words is "twelve billion, one hundred fifty-nine million, seven hundred seven thousand, three hundred eighty-five".

Divisors: 1 3 5 7 15 17 21 35 51 85 105 119 255 357 595 1785 6812161 20436483 34060805 47685127 102182415 115806737 143055381 238425635 347420211 579033685 715276905 810647159 1737101055 2431941477 4053235795 12159707385