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12205353253 = 43927802627
BaseRepresentation
bin10110101110111111…
…01110100100100101
31011111121112012001111
423113133232210211
5144444032301003
65335043025021
7611313535162
oct132737564445
934447465044
1012205353253
1151a3670605
12244766b171
1311c6874622
1483add5069
154b67d5e6d
hex2d77ee925

12205353253 has 4 divisors (see below), whose sum is σ = 12233156320. Its totient is φ = 12177550188.

The previous prime is 12205353233. The next prime is 12205353287. The reversal of 12205353253 is 35235350221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35235350221 = 152839230539.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12205353253 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 (12205353203) 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, 13900875 + ... + 13901752.

It is an arithmetic number, because the mean of its divisors is an integer number (3058289080).

Almost surely, 212205353253 is an apocalyptic number.

It is an amenable number.

12205353253 is a deficient number, since it is larger than the sum of its proper divisors (27803067).

12205353253 is an equidigital number, since it uses as much as digits as its factorization.

12205353253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27803066.

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 12205353253 in words is "twelve billion, two hundred five million, three hundred fifty-three thousand, two hundred fifty-three".

Divisors: 1 439 27802627 12205353253