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12707113145 = 518114041009
BaseRepresentation
bin10111101010110011…
…10010100010111001
31012210120200020020012
423311121302202321
5202011010110040
65500525311305
7626615452046
oct136531624271
935716606205
1012707113145
11543091a201
122567705535
1312767c477c
148878c81cd
154e589a865
hex2f56728b9

12707113145 has 8 divisors (see below), whose sum is σ = 15332782920. Its totient is φ = 10109525760.

The previous prime is 12707113127. The next prime is 12707113183. The reversal of 12707113145 is 54131170721.

It can be written as a sum of positive squares in 4 ways, for example, as 71554681 + 12635558464 = 8459^2 + 112408^2 .

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

It is not a de Polignac number, because 12707113145 - 226 = 12640004281 is a prime.

It is a super-2 number, since 2×127071131452 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7019600 + ... + 7021409.

It is an arithmetic number, because the mean of its divisors is an integer number (1916597865).

Almost surely, 212707113145 is an apocalyptic number.

It is an amenable number.

12707113145 is a deficient number, since it is larger than the sum of its proper divisors (2625669775).

12707113145 is a wasteful number, since it uses less digits than its factorization.

12707113145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14041195.

The product of its (nonzero) digits is 5880, while the sum is 32.

Adding to 12707113145 its reverse (54131170721), we get a palindrome (66838283866).

The spelling of 12707113145 in words is "twelve billion, seven hundred seven million, one hundred thirteen thousand, one hundred forty-five".

Divisors: 1 5 181 905 14041009 70205045 2541422629 12707113145