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13191081676847 = 179762571278479
BaseRepresentation
bin1011111111110100100110…
…1111001101000000101111
31201201001111011101110022222
42333331021233031000233
53212110313402124342
644015522124025555
72531011205143304
oct277751157150057
951631434343288
1013191081676847
114226340796798
12159062a6922bb
13748bb54239a9
143386478b30ab
1517d1e4bb4ed2
hexbff49bcd02f

13191081676847 has 16 divisors (see below), whose sum is σ = 14113283909760. Its totient is φ = 12285171253248.

The previous prime is 13191081676837. The next prime is 13191081676867. The reversal of 13191081676847 is 74867618019131.

It is not a de Polignac number, because 13191081676847 - 222 = 13191077482543 is a prime.

It is a super-2 number, since 2×131910816768472 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13191081676847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13191081676837) 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, 9678554 + ... + 10957032.

It is an arithmetic number, because the mean of its divisors is an integer number (882080244360).

Almost surely, 213191081676847 is an apocalyptic number.

13191081676847 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13191081676847 is a deficient number, since it is larger than the sum of its proper divisors (922202232913).

13191081676847 is a wasteful number, since it uses less digits than its factorization.

13191081676847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284850.

The product of its (nonzero) digits is 12192768, while the sum is 62.

The spelling of 13191081676847 in words is "thirteen trillion, one hundred ninety-one billion, eighty-one million, six hundred seventy-six thousand, eight hundred forty-seven".

Divisors: 1 17 97 1649 6257 106369 606929 1278479 10317793 21734143 124012463 2108211871 7999443103 135990532751 775945980991 13191081676847