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205082180468 = 2211191311872623
BaseRepresentation
bin1011111011111111011…
…0011011101101110100
3201121100112022012110122
42332333312123231310
511330002014233333
6234114034511112
720550061525454
oct2767766335564
9647315265418
10205082180468
1179a7a5a9650
12338b5735498
13164541c2759
149cd7055d64
155504710798
hex2fbfd9bb74

205082180468 has 48 divisors (see below), whose sum is σ = 415273098240. Its totient is φ = 87638709600.

The previous prime is 205082180467. The next prime is 205082180491. The reversal of 205082180468 is 864081280502.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205082180467) 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, 826796 + ... + 1045827.

It is an arithmetic number, because the mean of its divisors is an integer number (8651522880).

Almost surely, 2205082180468 is an apocalyptic number.

It is an amenable number.

205082180468 is an abundant number, since it is smaller than the sum of its proper divisors (210190917772).

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

205082180468 is a wasteful number, since it uses less digits than its factorization.

205082180468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872788 (or 1872786 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The spelling of 205082180468 in words is "two hundred five billion, eighty-two million, one hundred eighty thousand, four hundred sixty-eight".

Divisors: 1 2 4 11 19 22 38 44 76 131 209 262 418 524 836 1441 2489 2882 4978 5764 9956 27379 54758 109516 1872623 3745246 7490492 20598853 35579837 41197706 71159674 82395412 142319348 245313613 391378207 490627226 782756414 981254452 1565512828 2698449743 4660958647 5396899486 9321917294 10793798972 18643834588 51270545117 102541090234 205082180468