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53784021873 = 388120349611
BaseRepresentation
bin110010000101110001…
…110000101101110001
312010211022010101210010
4302011301300231301
51340122202144443
640412534125133
73612550433331
oct620561605561
9163738111703
1053784021873
112089a75075a
12a5101b07a9
1350c1a0151a
1428631030c1
1515ebba6733
hexc85c70b71

53784021873 has 8 divisors (see below), whose sum is σ = 71793431136. Its totient is φ = 35815313600.

The previous prime is 53784021871. The next prime is 53784021883. The reversal of 53784021873 is 37812048735.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53784021873 - 21 = 53784021871 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53784021871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10172163 + ... + 10177448.

It is an arithmetic number, because the mean of its divisors is an integer number (8974178892).

Almost surely, 253784021873 is an apocalyptic number.

It is an amenable number.

53784021873 is a deficient number, since it is larger than the sum of its proper divisors (18009409263).

53784021873 is a wasteful number, since it uses less digits than its factorization.

53784021873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20350495.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 53784021873 in words is "fifty-three billion, seven hundred eighty-four million, twenty-one thousand, eight hundred seventy-three".

Divisors: 1 3 881 2643 20349611 61048833 17928007291 53784021873