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12650250140 = 2251163191127
BaseRepresentation
bin10111100100000001…
…10111111110011100
31012122121200021211222
423302000313332130
5201401431001030
65451134432512
7625325231513
oct136200677634
935577607758
1012650250140
115401811190
122550662738
131267aa5618
1488012567a
154e08b73e5
hex2f2037f9c

12650250140 has 48 divisors (see below), whose sum is σ = 29026819584. Its totient is φ = 4592750400.

The previous prime is 12650250131. The next prime is 12650250157. The reversal of 12650250140 is 4105205621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93257 + ... + 184383.

It is an arithmetic number, because the mean of its divisors is an integer number (604725408).

Almost surely, 212650250140 is an apocalyptic number.

12650250140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12650250140 is an abundant number, since it is smaller than the sum of its proper divisors (16376569444).

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

12650250140 is a wasteful number, since it uses less digits than its factorization.

12650250140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91778 (or 91776 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 12650250140 its reverse (4105205621), we get a palindrome (16755455761).

The spelling of 12650250140 in words is "twelve billion, six hundred fifty million, two hundred fifty thousand, one hundred forty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 631 1262 2524 3155 6310 6941 12620 13882 27764 34705 69410 91127 138820 182254 364508 455635 911270 1002397 1822540 2004794 4009588 5011985 10023970 20047940 57501137 115002274 230004548 287505685 575011370 632512507 1150022740 1265025014 2530050028 3162562535 6325125070 12650250140