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13887526513 = 717911083421
BaseRepresentation
bin11001110111100001…
…01101011001110001
31022211211211102221211
430323300231121301
5211420201322023
610214013520121
71001101012330
oct147360553161
938754742854
1013887526513
115987168243
122836aa3041
13140421ba13
1495a599d17
15564317a0d
hex33bc2d671

13887526513 has 8 divisors (see below), whose sum is σ = 15960127680. Its totient is φ = 11837092560.

The previous prime is 13887526511. The next prime is 13887526517. The reversal of 13887526513 is 31562578831.

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 13887526513 - 21 = 13887526511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13887526511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5540458 + ... + 5542963.

It is an arithmetic number, because the mean of its divisors is an integer number (1995015960).

Almost surely, 213887526513 is an apocalyptic number.

It is an amenable number.

13887526513 is a deficient number, since it is larger than the sum of its proper divisors (2072601167).

13887526513 is a wasteful number, since it uses less digits than its factorization.

13887526513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11083607.

The product of its digits is 1209600, while the sum is 49.

The spelling of 13887526513 in words is "thirteen billion, eight hundred eighty-seven million, five hundred twenty-six thousand, five hundred thirteen".

Divisors: 1 7 179 1253 11083421 77583947 1983932359 13887526513