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13102525680868 = 22131971279043897
BaseRepresentation
bin1011111010101010101101…
…1000111000110011100100
31201101120220112122202100001
42332222223120320303210
53204132433033241433
643511114525431044
72521424541455101
oct276525330706344
951346815582301
1013102525680868
1141a182818a258
12157743540b484
13740741819380
1433424669daa8
1517ac604c157d
hexbeaab638ce4

13102525680868 has 24 divisors (see below), whose sum is σ = 24818567796792. Its totient is φ = 6016622486784.

The previous prime is 13102525680859. The next prime is 13102525680887. The reversal of 13102525680868 is 86808652520131.

It can be written as a sum of positive squares in 4 ways, for example, as 447772428964 + 12654753251904 = 669158^2 + 3557352^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639511705 + ... + 639532192.

It is an arithmetic number, because the mean of its divisors is an integer number (1034106991533).

Almost surely, 213102525680868 is an apocalyptic number.

It is an amenable number.

13102525680868 is a deficient number, since it is larger than the sum of its proper divisors (11716042115924).

13102525680868 is a wasteful number, since it uses less digits than its factorization.

13102525680868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279044111 (or 1279044109 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 55.

The spelling of 13102525680868 in words is "thirteen trillion, one hundred two billion, five hundred twenty-five million, six hundred eighty thousand, eight hundred sixty-eight".

Divisors: 1 2 4 13 26 52 197 394 788 2561 5122 10244 1279043897 2558087794 5116175588 16627570661 33255141322 66510282644 251971647709 503943295418 1007886590836 3275631420217 6551262840434 13102525680868