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54868695791 = 7132462110037
BaseRepresentation
bin110011000110011011…
…011101101011101111
312020121220010112200012
4303012123131223233
51344332341231131
641112322323435
73651461135060
oct630633355357
9166556115605
1054868695791
11212a6a48288
12a7734b957b
135235647300
1429271b2567
15166201152b
hexcc66ddaef

54868695791 has 24 divisors (see below), whose sum is σ = 67923211104. Its totient is φ = 43398875520.

The previous prime is 54868695781. The next prime is 54868695803. The reversal of 54868695791 is 19759686845.

It is a happy number.

It is not a de Polignac number, because 54868695791 - 218 = 54868433647 is a prime.

It is a super-2 number, since 2×548686957912 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54868695731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5461625 + ... + 5471661.

It is an arithmetic number, because the mean of its divisors is an integer number (2830133796).

Almost surely, 254868695791 is an apocalyptic number.

54868695791 is a deficient number, since it is larger than the sum of its proper divisors (13054515313).

54868695791 is a wasteful number, since it uses less digits than its factorization.

54868695791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14691 (or 14678 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 68.

The spelling of 54868695791 in words is "fifty-four billion, eight hundred sixty-eight million, six hundred ninety-five thousand, seven hundred ninety-one".

Divisors: 1 7 13 91 169 1183 4621 10037 32347 60073 70259 130481 420511 780949 913367 1696253 5466643 11873771 46380977 324666839 602952701 4220668907 7838385113 54868695791