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12750510520 = 2351122634403
BaseRepresentation
bin10111101111111110…
…10101100110111000
31012220121100001020101
423313333111212320
5202103112314040
65505115405144
7630653360026
oct136777254670
935817301211
1012750510520
115453370300
12257a1537b4
1312827aa7a7
1488d583716
154e95be09a
hex2f7fd59b8

12750510520 has 48 divisors (see below), whose sum is σ = 31533815880. Its totient is φ = 4636547520.

The previous prime is 12750510499. The next prime is 12750510523. The reversal of 12750510520 is 2501505721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12750510523) 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 11 ways as a sum of consecutive naturals, for example, 1312362 + ... + 1322041.

Almost surely, 212750510520 is an apocalyptic number.

12750510520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12750510520 is an abundant number, since it is smaller than the sum of its proper divisors (18783305360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12750510520 is a wasteful number, since it uses less digits than its factorization.

12750510520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634436 (or 2634421 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The spelling of 12750510520 in words is "twelve billion, seven hundred fifty million, five hundred ten thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 121 220 242 440 484 605 968 1210 2420 4840 2634403 5268806 10537612 13172015 21075224 26344030 28978433 52688060 57956866 105376120 115913732 144892165 231827464 289784330 318762763 579568660 637525526 1159137320 1275051052 1593813815 2550102104 3187627630 6375255260 12750510520