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12408670805 = 512312016031
BaseRepresentation
bin10111000111001110…
…10100101001010101
31012000210002210022012
423203213110221111
5200403104431210
65411144514005
7616332650546
oct134347245125
935023083265
1012408670805
11529840a043
1224a377b905
131229a2097b
14859ddc4cd
154c9598305
hex2e39d4a55

12408670805 has 8 divisors (see below), whose sum is σ = 14902508544. Its totient is φ = 9918867600.

The previous prime is 12408670789. The next prime is 12408670817. The reversal of 12408670805 is 50807680421.

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

It is not a de Polignac number, because 12408670805 - 24 = 12408670789 is a prime.

It is a super-2 number, since 2×124086708052 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001861 + ... + 1014170.

It is an arithmetic number, because the mean of its divisors is an integer number (1862813568).

Almost surely, 212408670805 is an apocalyptic number.

It is an amenable number.

12408670805 is a deficient number, since it is larger than the sum of its proper divisors (2493837739).

12408670805 is a wasteful number, since it uses less digits than its factorization.

12408670805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017267.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 12408670805 in words is "twelve billion, four hundred eight million, six hundred seventy thousand, eight hundred five".

Divisors: 1 5 1231 6155 2016031 10080155 2481734161 12408670805