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205851264088 = 23211209958099
BaseRepresentation
bin1011111110110110110…
…0010000010001011000
3201200100010110200212011
42333231230100101120
511333040410422323
6234322230555304
720605120605661
oct2775554202130
9650303420764
10205851264088
117a334743548
1233a8b208b34
131654763c512
149d6b254368
15554becc20d
hex2fedb10458

205851264088 has 32 divisors (see below), whose sum is σ = 387991800000. Its totient is φ = 102387267360.

The previous prime is 205851264077. The next prime is 205851264089. The reversal of 205851264088 is 880462158502.

205851264088 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205851264089) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3514063 + ... + 3572161.

It is an arithmetic number, because the mean of its divisors is an integer number (12124743750).

Almost surely, 2205851264088 is an apocalyptic number.

It is an amenable number.

205851264088 is a deficient number, since it is larger than the sum of its proper divisors (182140535912).

205851264088 is a wasteful number, since it uses less digits than its factorization.

205851264088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60415 (or 60411 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 49.

The spelling of 205851264088 in words is "two hundred five billion, eight hundred fifty-one million, two hundred sixty-four thousand, eighty-eight".

Divisors: 1 2 4 8 211 422 844 1688 2099 4198 8396 16792 58099 116198 232396 442889 464792 885778 1771556 3543112 12258889 24517778 49035556 98071112 121949801 243899602 487799204 975598408 25731408011 51462816022 102925632044 205851264088