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12638875125180 = 22351207117450743
BaseRepresentation
bin1011011111101011011110…
…1010011000010110111100
31122202021010221100010121210
42313322313222120112330
53124033404013001210
642514115153124420
72443062051663633
oct267726752302674
948667127303553
1012638875125180
114033131571327
1215015b9859710
13708ac134c735
14319a20c9851a
1516db75b28e20
hexb7eb7a985bc

12638875125180 has 48 divisors (see below), whose sum is σ = 35391784103424. Its totient is φ = 3370087295040.

The previous prime is 12638875125131. The next prime is 12638875125251. The reversal of 12638875125180 is 8152157883621.

It is a self number, because there is not a number n which added to its sum of digits gives 12638875125180.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8001112 + ... + 9449631.

It is an arithmetic number, because the mean of its divisors is an integer number (737328835488).

Almost surely, 212638875125180 is an apocalyptic number.

12638875125180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12638875125180 is an abundant number, since it is smaller than the sum of its proper divisors (22752908978244).

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

12638875125180 is a wasteful number, since it uses less digits than its factorization.

12638875125180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17462826 (or 17462824 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 57.

The spelling of 12638875125180 in words is "twelve trillion, six hundred thirty-eight billion, eight hundred seventy-five million, one hundred twenty-five thousand, one hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 12071 24142 36213 48284 60355 72426 120710 144852 181065 241420 362130 724260 17450743 34901486 52352229 69802972 87253715 104704458 174507430 209408916 261761145 349014860 523522290 1047044580 210647918753 421295837506 631943756259 842591675012 1053239593765 1263887512518 2106479187530 2527775025036 3159718781295 4212958375060 6319437562590 12638875125180