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69485281272 = 23331129244647
BaseRepresentation
bin100000010110110100…
…1010011111111111000
320122100112211000112000
41000231221103333320
52114301213000042
651530542421000
75006624100651
oct1005551237770
9218315730460
1069485281272
11275176a22a0
1211572591760
13672490ac64
14351250c528
151c1a33b74c
hex102da53ff8

69485281272 has 64 divisors (see below), whose sum is σ = 210561465600. Its totient is φ = 21056145120.

The previous prime is 69485281259. The next prime is 69485281277. The reversal of 69485281272 is 27218258496.

69485281272 is a `hidden beast` number, since 6 + 9 + 48 + 528 + 1 + 2 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69485281277) 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, 14619948 + ... + 14624699.

It is an arithmetic number, because the mean of its divisors is an integer number (3290022900).

Almost surely, 269485281272 is an apocalyptic number.

It is an amenable number.

69485281272 is an abundant number, since it is smaller than the sum of its proper divisors (141076184328).

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

69485281272 is a wasteful number, since it uses less digits than its factorization.

69485281272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29244673 (or 29244663 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 69485281272 in words is "sixty-nine billion, four hundred eighty-five million, two hundred eighty-one thousand, two hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 11 12 18 22 24 27 33 36 44 54 66 72 88 99 108 132 198 216 264 297 396 594 792 1188 2376 29244647 58489294 87733941 116978588 175467882 233957176 263201823 321691117 350935764 526403646 643382234 701871528 789605469 965073351 1052807292 1286764468 1579210938 1930146702 2105614584 2573528936 2895220053 3158421876 3860293404 5790440106 6316843752 7720586808 8685660159 11580880212 17371320318 23161760424 34742640636 69485281272