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13879252641 = 323250380363
BaseRepresentation
bin11001110110100010…
…01001011010100001
31022211021021002100010
430323101021122201
5211411042041031
610213120315133
71000640462262
oct147321113241
938737232303
1013879252641
115982526a31
122834172aa9
1314025b2a37
14959444969
15563731246
hex33b4496a1

13879252641 has 16 divisors (see below), whose sum is σ = 19318219776. Its totient is φ = 8846891856.

The previous prime is 13879252619. The next prime is 13879252649. The reversal of 13879252641 is 14625297831.

It is not a de Polignac number, because 13879252641 - 218 = 13878990497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13879252649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132526 + ... + 212888.

It is an arithmetic number, because the mean of its divisors is an integer number (1207388736).

Almost surely, 213879252641 is an apocalyptic number.

It is an amenable number.

13879252641 is a deficient number, since it is larger than the sum of its proper divisors (5438967135).

13879252641 is a wasteful number, since it uses less digits than its factorization.

13879252641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82892.

The product of its digits is 725760, while the sum is 48.

The spelling of 13879252641 in words is "thirteen billion, eight hundred seventy-nine million, two hundred fifty-two thousand, six hundred forty-one".

Divisors: 1 3 23 69 2503 7509 57569 80363 172707 241089 1848349 5545047 201148589 603445767 4626417547 13879252641