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12205324453 = 72989675559
BaseRepresentation
bin10110101110111111…
…00111100010100101
31011111121110201112211
423113133213202211
5144444030340303
65335042243421
7611313355210
oct132737474245
934447421484
1012205324453
1151a3650a03
122447656571
1311c686449a
1483adc8777
154b67cc66d
hex2d77e78a5

12205324453 has 16 divisors (see below), whose sum is σ = 14592096000. Its totient is φ = 9987449472.

The previous prime is 12205324451. The next prime is 12205324457. The reversal of 12205324453 is 35442350221.

It is not a de Polignac number, because 12205324453 - 21 = 12205324451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12205324451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319713 + ... + 355846.

It is an arithmetic number, because the mean of its divisors is an integer number (912006000).

Almost surely, 212205324453 is an apocalyptic number.

It is an amenable number.

12205324453 is a deficient number, since it is larger than the sum of its proper divisors (2386771547).

12205324453 is an equidigital number, since it uses as much as digits as its factorization.

12205324453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675684.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 12205324453 its reverse (35442350221), we get a palindrome (47647674674).

The spelling of 12205324453 in words is "twelve billion, two hundred five million, three hundred twenty-four thousand, four hundred fifty-three".

Divisors: 1 7 29 89 203 623 2581 18067 675559 4728913 19591211 60124751 137138477 420873257 1743617779 12205324453