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51853766142 = 2373009118373
BaseRepresentation
bin110000010010101110…
…011010110111111110
311221211210000020201010
4300102232122313332
51322144031004032
635453222100050
73513661511523
oct602256326776
9157753006633
1051853766142
111aa9a10aa92
12a07187a626
134b74b36479
14271ca0114a
1515374bdccc
hexc12b9adfe

51853766142 has 16 divisors (see below), whose sum is σ = 103709828880. Its totient is φ = 17284205952.

The previous prime is 51853766131. The next prime is 51853766207. The reversal of 51853766142 is 24166735815.

It is a junction number, because it is equal to n+sod(n) for n = 51853766091 and 51853766100.

It is a congruent number.

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, 378868 + ... + 497240.

It is an arithmetic number, because the mean of its divisors is an integer number (6481864305).

Almost surely, 251853766142 is an apocalyptic number.

51853766142 is an abundant number, since it is smaller than the sum of its proper divisors (51856062738).

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

51853766142 is a wasteful number, since it uses less digits than its factorization.

51853766142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191387.

The product of its digits is 1209600, while the sum is 48.

The spelling of 51853766142 in words is "fifty-one billion, eight hundred fifty-three million, seven hundred sixty-six thousand, one hundred forty-two".

Divisors: 1 2 3 6 73009 118373 146018 219027 236746 355119 438054 710238 8642294357 17284588714 25926883071 51853766142