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12408288481 = 109233488573
BaseRepresentation
bin10111000111001011…
…10111010011100001
31012000202101100212001
423203211313103201
5200403010212411
65411132404001
7616326466111
oct134345672341
935022340761
1012408288481
115298178876
1224a3616601
131229918944
14859d3d041
154c951edc1
hex2e39774e1

12408288481 has 8 divisors (see below), whose sum is σ = 12575894760. Its totient is φ = 12241660032.

The previous prime is 12408288463. The next prime is 12408288509. The reversal of 12408288481 is 18488280421.

It can be written as a sum of positive squares in 4 ways, for example, as 4842072225 + 7566216256 = 69585^2 + 86984^2 .

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 12408288481 - 25 = 12408288449 is a prime.

It is a super-2 number, since 2×124082884812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12408288281) 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 7 ways as a sum of consecutive naturals, for example, 218890 + ... + 269683.

It is an arithmetic number, because the mean of its divisors is an integer number (1571986845).

Almost surely, 212408288481 is an apocalyptic number.

It is an amenable number.

12408288481 is a deficient number, since it is larger than the sum of its proper divisors (167606279).

12408288481 is a wasteful number, since it uses less digits than its factorization.

12408288481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488915.

The product of its (nonzero) digits is 262144, while the sum is 46.

The spelling of 12408288481 in words is "twelve billion, four hundred eight million, two hundred eighty-eight thousand, four hundred eighty-one".

Divisors: 1 109 233 25397 488573 53254457 113837509 12408288481