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18332052480 = 2103257223353
BaseRepresentation
bin10001000100101011…
…001110110000000000
31202022120222202101200
4101010223032300000
5300021001134410
612231023301200
71216166606100
oct210453166000
952276882350
1018332052480
117857a693a5
12367744a800
131961c71641
14c5c985200
157245e93c0
hex444acec00

18332052480 has 792 divisors, whose sum is σ = 77321773152. Its totient is φ = 3996647424.

The previous prime is 18332052469. The next prime is 18332052481. The reversal of 18332052480 is 8425023381.

18332052480 is a `hidden beast` number, since 1 + 8 + 33 + 20 + 524 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (18332052481) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 51931984 + ... + 51932336.

Almost surely, 218332052480 is an apocalyptic number.

18332052480 is a gapful number since it is divisible by the number (10) 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 18332052480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38660886576).

18332052480 is an abundant number, since it is smaller than the sum of its proper divisors (58989720672).

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

18332052480 is a wasteful number, since it uses less digits than its factorization.

18332052480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 18332052480 in words is "eighteen billion, three hundred thirty-two million, fifty-two thousand, four hundred eighty".