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12513588479 = 729531163081
BaseRepresentation
bin10111010011101111…
…00011010011111111
31012022002112011021222
423221313203103333
5201111434312404
65425413343555
7622045514150
oct135167432377
935262464258
1012513588479
11534165a267
122512937bbb
131245696932
14869d0d927
154d38bedbe
hex2e9de34ff

12513588479 has 16 divisors (see below), whose sum is σ = 15073542720. Its totient is φ = 10160666880.

The previous prime is 12513588457. The next prime is 12513588487. The reversal of 12513588479 is 97488531521.

It is not a de Polignac number, because 12513588479 - 232 = 8218621183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12513588479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12513588419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570782 + ... + 592299.

It is an arithmetic number, because the mean of its divisors is an integer number (942096420).

Almost surely, 212513588479 is an apocalyptic number.

12513588479 is a deficient number, since it is larger than the sum of its proper divisors (2559954241).

12513588479 is a wasteful number, since it uses less digits than its factorization.

12513588479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163170.

The product of its digits is 2419200, while the sum is 53.

The spelling of 12513588479 in words is "twelve billion, five hundred thirteen million, five hundred eighty-eight thousand, four hundred seventy-nine".

Divisors: 1 7 29 53 203 371 1537 10759 1163081 8141567 33729349 61643293 236105443 431503051 1787655497 12513588479