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198951845568 = 2637799292017
BaseRepresentation
bin1011100101001001110…
…1000011111011000000
3201000112021222220220220
42321102131003323000
511224423133024233
6231221444303040
720242132533120
oct2712235037300
9630467886826
10198951845568
1177414148273
12326846a1a80
13159b8121958
1498b4bdac80
15529642eeb3
hex2e52743ec0

198951845568 has 224 divisors, whose sum is σ = 610165708800. Its totient is φ = 56035639296.

The previous prime is 198951845549. The next prime is 198951845579. The reversal of 198951845568 is 865548159891.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98636496 + ... + 98638512.

Almost surely, 2198951845568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198951845568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305082854400).

198951845568 is an abundant number, since it is smaller than the sum of its proper divisors (411213863232).

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

198951845568 is a wasteful number, since it uses less digits than its factorization.

198951845568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047 (or 3037 counting only the distinct ones).

The product of its digits is 124416000, while the sum is 69.

The spelling of 198951845568 in words is "one hundred ninety-eight billion, nine hundred fifty-one million, eight hundred forty-five thousand, five hundred sixty-eight".