Search a number
-
+
12108843107 = 107991121293
BaseRepresentation
bin10110100011011111…
…00100100001100011
31011020212220222000122
423101233210201203
5144244330434412
65321314310455
7606032316404
oct132157444143
934225828018
1012108843107
115154143059
12241b28842b
1311ac88342a
1482c2719ab
154ad0c0572
hex2d1be4863

12108843107 has 4 divisors (see below), whose sum is σ = 12109975200. Its totient is φ = 12107711016.

The previous prime is 12108843091. The next prime is 12108843119. The reversal of 12108843107 is 70134880121.

12108843107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70134880121 = 307072284003.

It is a cyclic number.

It is not a de Polignac number, because 12108843107 - 24 = 12108843091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12108843407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549848 + ... + 571445.

It is an arithmetic number, because the mean of its divisors is an integer number (3027493800).

Almost surely, 212108843107 is an apocalyptic number.

12108843107 is a deficient number, since it is larger than the sum of its proper divisors (1132093).

12108843107 is a wasteful number, since it uses less digits than its factorization.

12108843107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132092.

The product of its (nonzero) digits is 10752, while the sum is 35.

The spelling of 12108843107 in words is "twelve billion, one hundred eight million, eight hundred forty-three thousand, one hundred seven".

Divisors: 1 10799 1121293 12108843107