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12755430053 = 28345072191
BaseRepresentation
bin10111110000100100…
…00110101010100101
31012220221120222120022
423320102012222211
5202110342230203
65505413044525
7631043236502
oct137022065245
935827528508
1012755430053
115456120433
12257b926745
131283810a62
148900a44a9
154e9c41a38
hex2f8486aa5

12755430053 has 4 divisors (see below), whose sum is σ = 12800502528. Its totient is φ = 12710357580.

The previous prime is 12755430049. The next prime is 12755430101. The reversal of 12755430053 is 35003455721.

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: 35003455721 = 132692573517.

It is a cyclic number.

It is not a de Polignac number, because 12755430053 - 22 = 12755430049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12755429995 and 12755430022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12755430013) 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, 22535813 + ... + 22536378.

It is an arithmetic number, because the mean of its divisors is an integer number (3200125632).

Almost surely, 212755430053 is an apocalyptic number.

It is an amenable number.

12755430053 is a deficient number, since it is larger than the sum of its proper divisors (45072475).

12755430053 is an equidigital number, since it uses as much as digits as its factorization.

12755430053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45072474.

The product of its (nonzero) digits is 63000, while the sum is 35.

Adding to 12755430053 its reverse (35003455721), we get a palindrome (47758885774).

The spelling of 12755430053 in words is "twelve billion, seven hundred fifty-five million, four hundred thirty thousand, fifty-three".

Divisors: 1 283 45072191 12755430053