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12808739877558 = 2319112357367347
BaseRepresentation
bin1011101001100100010001…
…1000111111001010110110
31200100111121002211121212220
42322121010120333022312
53134324244402040213
643124130500223210
72461254341364102
oct272310430771266
950314532747786
1012808739877558
1140991798129a9
12152a50509ab06
1371bb22271631
14323d369a6902
151732b865ae23
hexba64463f2b6

12808739877558 has 16 divisors (see below), whose sum is σ = 26965768163520. Its totient is φ = 4044865224456.

The previous prime is 12808739877547. The next prime is 12808739877569. The reversal of 12808739877558 is 85577893780821.

It is an interprime number because it is at equal distance from previous prime (12808739877547) and next prime (12808739877569).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 56178683560 + ... + 56178683787.

It is an arithmetic number, because the mean of its divisors is an integer number (1685360510220).

Almost surely, 212808739877558 is an apocalyptic number.

12808739877558 is an abundant number, since it is smaller than the sum of its proper divisors (14157028285962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12808739877558 is a wasteful number, since it uses less digits than its factorization.

12808739877558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112357367371.

The product of its (nonzero) digits is 1896652800, while the sum is 78.

The spelling of 12808739877558 in words is "twelve trillion, eight hundred eight billion, seven hundred thirty-nine million, eight hundred seventy-seven thousand, five hundred fifty-eight".

Divisors: 1 2 3 6 19 38 57 114 112357367347 224714734694 337072102041 674144204082 2134789979593 4269579959186 6404369938779 12808739877558