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12813712505057 = 239324281220529
BaseRepresentation
bin1011101001110110110011…
…0010000011100011100001
31200100222102122201021102202
42322131230302003203201
53134414440400130212
643130312133022545
72461521512125262
oct272355462034341
950328378637382
1012813712505057
1140a02a0724602
12152b472484a55
1371c435538179
14324289180969
151734a9ea70c2
hexba76cc838e1

12813712505057 has 8 divisors (see below), whose sum is σ = 12819653247240. Its totient is φ = 12807772257280.

The previous prime is 12813712505047. The next prime is 12813712505059. The reversal of 12813712505057 is 75050521731821.

12813712505057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 171819369121 + 12641893135936 = 414511^2 + 3555544^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12813712505057 - 224 = 12813695727841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12813712505059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57994169 + ... + 58214697.

It is an arithmetic number, because the mean of its divisors is an integer number (1602456655905).

Almost surely, 212813712505057 is an apocalyptic number.

It is an amenable number.

12813712505057 is a deficient number, since it is larger than the sum of its proper divisors (5940742183).

12813712505057 is a wasteful number, since it uses less digits than its factorization.

12813712505057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247203.

The product of its (nonzero) digits is 588000, while the sum is 47.

The spelling of 12813712505057 in words is "twelve trillion, eight hundred thirteen billion, seven hundred twelve million, five hundred five thousand, fifty-seven".

Divisors: 1 2393 24281 220529 58104433 527725897 5354664649 12813712505057