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12787439551151 = 295931211961357
BaseRepresentation
bin1011101000010100111011…
…0010101100001010101111
31200021110121122111221010212
42322011032302230022233
53134002134011114101
643110245120253035
72456601446530106
oct272051662541257
950243548457125
1012787439551151
114090139293461
12152635b77117b
13719b093762b5
14322cb5b1703d
1517296d6881bb
hexba14ecac2af

12787439551151 has 16 divisors (see below), whose sum is σ = 13252002667200. Its totient is φ = 12324455044608.

The previous prime is 12787439551123. The next prime is 12787439551217. The reversal of 12787439551151 is 15115593478721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12787439551151 is a prime.

It is a super-2 number, since 2×127874395511512 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12787439551121) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 208379765 + ... + 208441121.

It is an arithmetic number, because the mean of its divisors is an integer number (828250166700).

Almost surely, 212787439551151 is an apocalyptic number.

12787439551151 is a deficient number, since it is larger than the sum of its proper divisors (464563116049).

12787439551151 is a wasteful number, since it uses less digits than its factorization.

12787439551151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74098.

The product of its digits is 10584000, while the sum is 59.

The spelling of 12787439551151 in words is "twelve trillion, seven hundred eighty-seven billion, four hundred thirty-nine million, five hundred fifty-one thousand, one hundred fifty-one".

Divisors: 1 29 593 12119 17197 61357 351451 1779353 7186567 36384701 208410443 743585483 1055156329 21563979007 440946191419 12787439551151