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206121376872 = 233226631075027
BaseRepresentation
bin1011111111110111001…
…0101001110001101000
3201201000221201211221100
42333331302221301220
511334114033024442
6234405120241400
720614610536545
oct2777562516150
9651027654840
10206121376872
117a463164254
1233b45770260
131658b5a4778
149d95087bcc
155565a8584c
hex2ffdca9c68

206121376872 has 48 divisors (see below), whose sum is σ = 558455545440. Its totient is φ = 68681261088.

The previous prime is 206121376849. The next prime is 206121376907. The reversal of 206121376872 is 278673121602.

206121376872 is a `hidden beast` number, since 20 + 612 + 1 + 3 + 7 + 6 + 8 + 7 + 2 = 666.

206121376872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 345778 + ... + 729249.

It is an arithmetic number, because the mean of its divisors is an integer number (11634490530).

Almost surely, 2206121376872 is an apocalyptic number.

It is an amenable number.

206121376872 is an abundant number, since it is smaller than the sum of its proper divisors (352334168568).

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

206121376872 is a wasteful number, since it uses less digits than its factorization.

206121376872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077702 (or 1077695 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 206121376872 in words is "two hundred six billion, one hundred twenty-one million, three hundred seventy-six thousand, eight hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 2663 5326 7989 10652 15978 21304 23967 31956 47934 63912 95868 191736 1075027 2150054 3225081 4300108 6450162 8600216 9675243 12900324 19350486 25800648 38700972 77401944 2862796901 5725593802 8588390703 11451187604 17176781406 22902375208 25765172109 34353562812 51530344218 68707125624 103060688436 206121376872