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12844141949 = 1911357110477
BaseRepresentation
bin10111111011001001…
…00000110101111101
31020011010112000102002
423331210200311331
5202301100020244
65522302312045
7633201255662
oct137544406575
936133460362
1012844141949
1154a1201a51
1225a5588625
1312990015c2
1489bb97a69
15502916a4e
hex2fd920d7d

12844141949 has 16 divisors (see below), whose sum is σ = 13664988480. Its totient is φ = 12038181120.

The previous prime is 12844141909. The next prime is 12844142029. The reversal of 12844141949 is 94914144821.

It is not a de Polignac number, because 12844141949 - 28 = 12844141693 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12844141909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1220699 + ... + 1231175.

It is an arithmetic number, because the mean of its divisors is an integer number (854061780).

Almost surely, 212844141949 is an apocalyptic number.

12844141949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12844141949 is a deficient number, since it is larger than the sum of its proper divisors (820846531).

12844141949 is a wasteful number, since it uses less digits than its factorization.

12844141949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11180.

The product of its digits is 331776, while the sum is 47.

The spelling of 12844141949 in words is "twelve billion, eight hundred forty-four million, one hundred forty-one thousand, nine hundred forty-nine".

Divisors: 1 19 113 571 2147 10477 10849 64523 199063 1183901 1225937 5982367 22494119 113664973 676007471 12844141949