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12130816417 = 91997131861
BaseRepresentation
bin10110100110000110…
…11001000110100001
31011022102021022201221
423103003121012201
5144320442111132
65323421255041
7606420144466
oct132303310641
934272238657
1012130816417
115165590a15
122426704481
1311b42a7aa5
1483115166d
154aeeb0e97
hex2d30d91a1

12130816417 has 4 divisors (see below), whose sum is σ = 12131040276. Its totient is φ = 12130592560.

The previous prime is 12130816343. The next prime is 12130816441. The reversal of 12130816417 is 71461803121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3264522496 + 8866293921 = 57136^2 + 94161^2 .

It is a cyclic number.

It is not a de Polignac number, because 12130816417 - 27 = 12130816289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12130826417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26067 + ... + 157927.

It is an arithmetic number, because the mean of its divisors is an integer number (3032760069).

Almost surely, 212130816417 is an apocalyptic number.

It is an amenable number.

12130816417 is a deficient number, since it is larger than the sum of its proper divisors (223859).

12130816417 is an equidigital number, since it uses as much as digits as its factorization.

12130816417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223858.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 12130816417 in words is "twelve billion, one hundred thirty million, eight hundred sixteen thousand, four hundred seventeen".

Divisors: 1 91997 131861 12130816417