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12428181851168 = 2519181112934191
BaseRepresentation
bin1011010011011010100101…
…0111010100110000100000
31122000010022100202211211202
42310312221113110300200
53112110404023214133
642233232233100332
72421622634465636
oct264665127246040
948003270684752
1012428181851168
113a61842720096
1214887b8b576a8
136c1c8481a2b5
1430d75494b356
15168443a022e8
hexb4da95d4c20

12428181851168 has 48 divisors (see below), whose sum is σ = 25898068909440. Its totient is φ = 5854508409600.

The previous prime is 12428181851093. The next prime is 12428181851179. The reversal of 12428181851168 is 86115818182421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56357048 + ... + 56577143.

It is an arithmetic number, because the mean of its divisors is an integer number (539543102280).

Almost surely, 212428181851168 is an apocalyptic number.

It is an amenable number.

12428181851168 is an abundant number, since it is smaller than the sum of its proper divisors (13469887058272).

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

12428181851168 is a wasteful number, since it uses less digits than its factorization.

12428181851168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112934401 (or 112934393 counting only the distinct ones).

The product of its digits is 1966080, while the sum is 56.

The spelling of 12428181851168 in words is "twelve trillion, four hundred twenty-eight billion, one hundred eighty-one million, eight hundred fifty-one thousand, one hundred sixty-eight".

Divisors: 1 2 4 8 16 19 32 38 76 152 181 304 362 608 724 1448 2896 3439 5792 6878 13756 27512 55024 110048 112934191 225868382 451736764 903473528 1806947056 2145749629 3613894112 4291499258 8582998516 17165997032 20441088571 34331994064 40882177142 68663988128 81764354284 163528708568 327057417136 388380682849 654114834272 776761365698 1553522731396 3107045462792 6214090925584 12428181851168