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12683881508 = 2231216931949
BaseRepresentation
bin10111101000000010…
…01010110000100100
31012201221221221102012
423310001022300210
5201434033202013
65454335333352
7626214133244
oct136401126044
935657857365
1012683881508
1154197a1a01
12255b981258
131271a4c43c
1488479bb24
154e380c1a8
hex2f404ac24

12683881508 has 36 divisors (see below), whose sum is σ = 22961238300. Its totient is φ = 6130589760.

The previous prime is 12683881451. The next prime is 12683881517. The reversal of 12683881508 is 80518838621.

It can be written as a sum of positive squares in 2 ways, for example, as 7653100324 + 5030781184 = 87482^2 + 70928^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6506918 + ... + 6508866.

It is an arithmetic number, because the mean of its divisors is an integer number (637812175).

Almost surely, 212683881508 is an apocalyptic number.

It is an amenable number.

12683881508 is a deficient number, since it is larger than the sum of its proper divisors (10277356792).

12683881508 is a wasteful number, since it uses less digits than its factorization.

12683881508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708 (or 3675 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 50.

The spelling of 12683881508 in words is "twelve billion, six hundred eighty-three million, eight hundred eighty-one thousand, five hundred eight".

Divisors: 1 2 4 31 62 124 961 1693 1922 1949 3386 3844 3898 6772 7796 52483 60419 104966 120838 209932 241676 1626973 1872989 3253946 3299657 3745978 6507892 6599314 7491956 13198628 102289367 204578734 409157468 3170970377 6341940754 12683881508