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12471718113 = 321385746457
BaseRepresentation
bin10111001110101111…
…10101000011100001
31012012011201220221200
423213113311003201
5201020224434423
65421320111413
7621026566131
oct134727650341
935164656850
1012471718113
11531aa61458
122500905569
131239ac697a
14864530ac1
154ced9dd43
hex2e75f50e1

12471718113 has 6 divisors (see below), whose sum is σ = 18014703954. Its totient is φ = 8314478736.

The previous prime is 12471718111. The next prime is 12471718121. The reversal of 12471718113 is 31181717421.

12471718113 is a `hidden beast` number, since 1 + 2 + 471 + 7 + 181 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9520295184 + 2951422929 = 97572^2 + 54327^2 .

It is not a de Polignac number, because 12471718113 - 21 = 12471718111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12471718111) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 692873220 + ... + 692873237.

It is an arithmetic number, because the mean of its divisors is an integer number (3002450659).

Almost surely, 212471718113 is an apocalyptic number.

It is an amenable number.

12471718113 is a deficient number, since it is larger than the sum of its proper divisors (5542985841).

12471718113 is a wasteful number, since it uses less digits than its factorization.

12471718113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385746463 (or 1385746460 counting only the distinct ones).

The product of its digits is 9408, while the sum is 36.

The spelling of 12471718113 in words is "twelve billion, four hundred seventy-one million, seven hundred eighteen thousand, one hundred thirteen".

Divisors: 1 3 9 1385746457 4157239371 12471718113