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12844156663 = 132478918169
BaseRepresentation
bin10111111011001001…
…00100011011110111
31020011010112202121001
423331210210123313
5202301101003123
65522302504131
7633201346612
oct137544443367
936133482531
1012844156663
1154a1212008
1225a5595047
131299008200
1489bb9d179
1550291b0ad
hex2fd9246f7

12844156663 has 24 divisors (see below), whose sum is σ = 14364475200. Its totient is φ = 11472873984.

The previous prime is 12844156657. The next prime is 12844156673. The reversal of 12844156663 is 36665144821.

It is not a de Polignac number, because 12844156663 - 229 = 12307285751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12844156603) 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, 697843 + ... + 716011.

It is an arithmetic number, because the mean of its divisors is an integer number (598519800).

Almost surely, 212844156663 is an apocalyptic number.

12844156663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12844156663 is a deficient number, since it is larger than the sum of its proper divisors (1520318537).

12844156663 is a wasteful number, since it uses less digits than its factorization.

12844156663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18331 (or 18318 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The spelling of 12844156663 in words is "twelve billion, eight hundred forty-four million, one hundred fifty-six thousand, six hundred sixty-three".

Divisors: 1 13 47 89 169 611 1157 4183 7943 15041 18169 54379 236197 706927 853943 1617041 3070561 11101259 21021533 76000927 144316367 273279929 988012051 12844156663