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12817183388 = 2217188487991
BaseRepresentation
bin10111110111111011…
…01011001010011100
31020002020210101012212
423323331223022130
5202222144332023
65515500415552
7632423155412
oct137375531234
936066711185
1012817183388
115487a69649
1225985475b8
131293552aa9
1489837b2b2
1550038de78
hex2fbf6b29c

12817183388 has 12 divisors (see below), whose sum is σ = 23749486992. Its totient is φ = 6031615680.

The previous prime is 12817183387. The next prime is 12817183391. The reversal of 12817183388 is 88338171821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12817183387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94243928 + ... + 94244063.

It is an arithmetic number, because the mean of its divisors is an integer number (1979123916).

Almost surely, 212817183388 is an apocalyptic number.

It is an amenable number.

12817183388 is a deficient number, since it is larger than the sum of its proper divisors (10932303604).

12817183388 is a wasteful number, since it uses less digits than its factorization.

12817183388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188488012 (or 188488010 counting only the distinct ones).

The product of its digits is 516096, while the sum is 50.

The spelling of 12817183388 in words is "twelve billion, eight hundred seventeen million, one hundred eighty-three thousand, three hundred eighty-eight".

Divisors: 1 2 4 17 34 68 188487991 376975982 753951964 3204295847 6408591694 12817183388