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52143291908 = 2213035822977
BaseRepresentation
bin110000100011111110…
…110111111000000100
311222120221210200101122
4300203332313320010
51323242140320113
635542043413112
73524105445131
oct604376677004
9158527720348
1052143291908
112012858aa84
12a132824198
134bbcb078a6
142749249588
151552b0e408
hexc23fb7e04

52143291908 has 6 divisors (see below), whose sum is σ = 91250760846. Its totient is φ = 26071645952.

The previous prime is 52143291859. The next prime is 52143291911. The reversal of 52143291908 is 80919234125.

It can be written as a sum of positive squares in only one way, i.e., 27629753284 + 24513538624 = 166222^2 + 156568^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6517911485 + ... + 6517911492.

It is an arithmetic number, because the mean of its divisors is an integer number (15208460141).

Almost surely, 252143291908 is an apocalyptic number.

It is an amenable number.

52143291908 is a deficient number, since it is larger than the sum of its proper divisors (39107468938).

52143291908 is a wasteful number, since it uses less digits than its factorization.

52143291908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13035822981 (or 13035822979 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 52143291908 in words is "fifty-two billion, one hundred forty-three million, two hundred ninety-one thousand, nine hundred eight".

Divisors: 1 2 4 13035822977 26071645954 52143291908