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42809053189 = 745722136047
BaseRepresentation
bin100111110111100111…
…100101000000000101
311002111102210020001111
4213313213211000011
51200133104200224
631355522325021
73043563643150
oct476747450005
9132442706044
1042809053189
111717865a301
1283687b9771
13406302c406
1421016aac97
1511a840dd94
hex9f79e5005

42809053189 has 16 divisors (see below), whose sum is σ = 49061956608. Its totient is φ = 36590585472.

The previous prime is 42809053153. The next prime is 42809053223. The reversal of 42809053189 is 98135090824.

42809053189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42809053189 - 223 = 42800664581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42801053189) 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, 7076364 + ... + 7082410.

It is an arithmetic number, because the mean of its divisors is an integer number (3066372288).

Almost surely, 242809053189 is an apocalyptic number.

It is an amenable number.

42809053189 is a deficient number, since it is larger than the sum of its proper divisors (6252903419).

42809053189 is a wasteful number, since it uses less digits than its factorization.

42809053189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8724.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 42809053189 in words is "forty-two billion, eight hundred nine million, fifty-three thousand, one hundred eighty-nine".

Divisors: 1 7 457 2213 3199 6047 15491 42329 1011341 2763479 7079387 13382011 19344353 93674077 6115579027 42809053189