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13120245055 = 52624049011
BaseRepresentation
bin11000011100000011…
…10000110100111111
31020212101001111200001
430032001300310333
5203332240320210
610005524215131
7643063146211
oct141601606477
936771044601
1013120245055
115623044335
122661b3a4a7
131311283318
148c670a5b1
1551bca503a
hex30e070d3f

13120245055 has 4 divisors (see below), whose sum is σ = 15744294072. Its totient is φ = 10496196040.

The previous prime is 13120245043. The next prime is 13120245059. The reversal of 13120245055 is 55054202131.

13120245055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55054202131 = 191328778987.

It is not a de Polignac number, because 13120245055 - 27 = 13120244927 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 (13120245059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1312024501 + ... + 1312024510.

It is an arithmetic number, because the mean of its divisors is an integer number (3936073518).

Almost surely, 213120245055 is an apocalyptic number.

13120245055 is a deficient number, since it is larger than the sum of its proper divisors (2624049017).

13120245055 is an equidigital number, since it uses as much as digits as its factorization.

13120245055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624049016.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 13120245055 its reverse (55054202131), we get a palindrome (68174447186).

The spelling of 13120245055 in words is "thirteen billion, one hundred twenty million, two hundred forty-five thousand, fifty-five".

Divisors: 1 5 2624049011 13120245055