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12882544285 = 513296834241
BaseRepresentation
bin10111111111101110…
…00000011010011101
31020020210210001111211
423333313000122131
5202340412404120
65530153344421
7634145551102
oct137767003235
936223701454
1012882544285
115510951216
1225b6408111
1312a3c58b90
148a2d12aa9
15505ea025a
hex2ffdc069d

12882544285 has 16 divisors (see below), whose sum is σ = 17222289840. Its totient is φ = 9185218560.

The previous prime is 12882544273. The next prime is 12882544309. The reversal of 12882544285 is 58244528821.

It can be written as a sum of positive squares in 8 ways, for example, as 1707094489 + 11175449796 = 41317^2 + 105714^2 .

It is not a de Polignac number, because 12882544285 - 25 = 12882544253 is a prime.

It is a super-2 number, since 2×128825442852 (a number of 21 digits) contains 22 as substring.

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, 3415236 + ... + 3419005.

It is an arithmetic number, because the mean of its divisors is an integer number (1076393115).

Almost surely, 212882544285 is an apocalyptic number.

It is an amenable number.

12882544285 is a deficient number, since it is larger than the sum of its proper divisors (4339745555).

12882544285 is a wasteful number, since it uses less digits than its factorization.

12882544285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6834288.

The product of its digits is 1638400, while the sum is 49.

The spelling of 12882544285 in words is "twelve billion, eight hundred eighty-two million, five hundred forty-four thousand, two hundred eighty-five".

Divisors: 1 5 13 29 65 145 377 1885 6834241 34171205 88845133 198192989 444225665 990964945 2576508857 12882544285