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12660068869 = 75033595589
BaseRepresentation
bin10111100101001100…
…10101001000000101
31012200022011010121121
423302212111020011
5201411434200434
65452125113541
7625504544530
oct136246251005
935608133547
1012660068869
115407308138
1225539b88b1
131269b32816
1488155da17
154e16a67b4
hex2f2995205

12660068869 has 8 divisors (see below), whose sum is σ = 14497418880. Its totient is φ = 10829911056.

The previous prime is 12660068867. The next prime is 12660068879. The reversal of 12660068869 is 96886006621.

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

It is a cyclic number.

It is not a de Polignac number, because 12660068869 - 21 = 12660068867 is a prime.

It is a super-2 number, since 2×126600688692 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12660068867) 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, 1794274 + ... + 1801315.

It is an arithmetic number, because the mean of its divisors is an integer number (1812177360).

Almost surely, 212660068869 is an apocalyptic number.

It is an amenable number.

12660068869 is a deficient number, since it is larger than the sum of its proper divisors (1837350011).

12660068869 is an equidigital number, since it uses as much as digits as its factorization.

12660068869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596099.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 12660068869 in words is "twelve billion, six hundred sixty million, sixty-eight thousand, eight hundred sixty-nine".

Divisors: 1 7 503 3521 3595589 25169123 1808581267 12660068869