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12482795521 = 7211319311681
BaseRepresentation
bin10111010000000100…
…00101100000000001
31012012221120201022001
423220002011200001
5201031043424041
65422353344001
7621223003600
oct135002054001
935187521261
1012482795521
115326238039
122504568001
13123c1a4a51
14865bb5a37
154d0d3b131
hex2e8085801

12482795521 has 24 divisors (see below), whose sum is σ = 14726469384. Its totient is φ = 10549002240.

The previous prime is 12482795477. The next prime is 12482795557. The reversal of 12482795521 is 12559728421.

It can be written as a sum of positive squares in 4 ways, for example, as 52998400 + 12429797121 = 7280^2 + 111489^2 .

It is not a de Polignac number, because 12482795521 - 217 = 12482664449 is a prime.

It is a super-2 number, since 2×124827955212 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12482795021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1062801 + ... + 1074481.

It is an arithmetic number, because the mean of its divisors is an integer number (613602891).

Almost surely, 212482795521 is an apocalyptic number.

It is an amenable number.

12482795521 is a deficient number, since it is larger than the sum of its proper divisors (2243673863).

12482795521 is a wasteful number, since it uses less digits than its factorization.

12482795521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12001 (or 11994 counting only the distinct ones).

The product of its digits is 403200, while the sum is 46.

The spelling of 12482795521 in words is "twelve billion, four hundred eighty-two million, seven hundred ninety-five thousand, five hundred twenty-one".

Divisors: 1 7 49 113 193 791 1351 5537 9457 11681 21809 81767 152663 572369 1068641 1319953 2254433 9239671 15781031 64677697 110467217 254750929 1783256503 12482795521