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8220225143857 = 17483542655521
BaseRepresentation
bin111011110011110101110…
…0110011000010000110001
31002002211211121211211220211
41313213223212120100301
52034140010114100412
625252152545104121
71505614561566226
oct167475346302061
932084747754824
108220225143857
11268a1a587a361
12b09174928041
13478219139a7c
14205c0a8d194d
15e3c60cc9ca7
hex779eb998431

8220225143857 has 4 divisors (see below), whose sum is σ = 8703767799396. Its totient is φ = 7736682488320.

The previous prime is 8220225143803. The next prime is 8220225143863. The reversal of 8220225143857 is 7583415220228.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7498593582736 + 721631561121 = 2738356^2 + 849489^2 .

It is a cyclic number.

It is not a de Polignac number, because 8220225143857 - 219 = 8220224619569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8220225143857.

It is not an unprimeable number, because it can be changed into a prime (8220225143887) 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 3 ways as a sum of consecutive naturals, for example, 241771327744 + ... + 241771327777.

It is an arithmetic number, because the mean of its divisors is an integer number (2175941949849).

Almost surely, 28220225143857 is an apocalyptic number.

It is an amenable number.

8220225143857 is a deficient number, since it is larger than the sum of its proper divisors (483542655539).

8220225143857 is a wasteful number, since it uses less digits than its factorization.

8220225143857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483542655538.

The product of its (nonzero) digits is 2150400, while the sum is 49.

The spelling of 8220225143857 in words is "eight trillion, two hundred twenty billion, two hundred twenty-five million, one hundred forty-three thousand, eight hundred fifty-seven".

Divisors: 1 17 483542655521 8220225143857