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18248010816 = 263728323369
BaseRepresentation
bin10000111111101010…
…101000110001000000
31202002201211222220110
4100333222220301000
5244332442321231
612214422111320
71214126350500
oct207752506100
952081758813
1018248010816
117814587682
12365327b540
13194a727749
14c51749a00
1571c048046
hex43faa8c40

18248010816 has 168 divisors, whose sum is σ = 56842944480. Its totient is φ = 5150681088.

The previous prime is 18248010751. The next prime is 18248010829. The reversal of 18248010816 is 61801084281.

It is a tau number, because it is divible by the number of its divisors (168).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 769180 + ... + 792548.

It is an arithmetic number, because the mean of its divisors is an integer number (338350860).

Almost surely, 218248010816 is an apocalyptic number.

18248010816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18248010816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28421472240).

18248010816 is an abundant number, since it is smaller than the sum of its proper divisors (38594933664).

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

18248010816 is a wasteful number, since it uses less digits than its factorization.

18248010816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23481 (or 23464 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 39.

The spelling of 18248010816 in words is "eighteen billion, two hundred forty-eight million, ten thousand, eight hundred sixteen".