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12513888875015 = 5112171989161169
BaseRepresentation
bin1011011000011001110111…
…1001101011001000000111
31122022022112102122202210022
42312012131321223020013
53120011421023000030
642340445020045355
72431045555252013
oct266063571531007
948268472582708
1012513888875015
113a95124040700
1214a133809385b
136ca09310c0a8
1431396562d543
1516a7ad035de5
hexb619de6b207

12513888875015 has 48 divisors (see below), whose sum is σ = 17478023844960. Its totient is φ = 8565085900800.

The previous prime is 12513888874957. The next prime is 12513888875041. The reversal of 12513888875015 is 51057888831521.

It is not a de Polignac number, because 12513888875015 - 234 = 12496709005831 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 204548351 + ... + 204609519.

It is an arithmetic number, because the mean of its divisors is an integer number (364125496770).

Almost surely, 212513888875015 is an apocalyptic number.

12513888875015 is a deficient number, since it is larger than the sum of its proper divisors (4964134969945).

12513888875015 is a wasteful number, since it uses less digits than its factorization.

12513888875015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81104 (or 81093 counting only the distinct ones).

The product of its (nonzero) digits is 21504000, while the sum is 62.

The spelling of 12513888875015 in words is "twelve trillion, five hundred thirteen billion, eight hundred eighty-eight million, eight hundred seventy-five thousand, fifteen".

Divisors: 1 5 11 17 55 85 121 187 605 935 2057 10285 19891 61169 99455 218801 305845 338147 672859 1039873 1094005 1690735 2406811 3364295 3719617 5199365 7401449 11438603 12034055 18598085 37007245 40915787 57193015 125824633 204578935 629123165 1216712579 6083562895 13383838369 20684113843 66919191845 103420569215 147222222059 227525252273 736111110295 1137626261365 2502777775003 12513888875015