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80805454848 = 210351272557
BaseRepresentation
bin100101101000001100…
…0010110010000000000
321201120110201102100000
41023100120112100000
52310442144023343
6101042125200000
75560302014316
oct1132030262000
9251513642300
1080805454848
11312a6633248
12137b1700000
137809c77811
143ca7b240b6
15217e071ed3
hex12d0616400

80805454848 has 264 divisors, whose sum is σ = 243966241792. Its totient is φ = 26712612864.

The previous prime is 80805454843. The next prime is 80805454883. The reversal of 80805454848 is 84845450808.

80805454848 is a `hidden beast` number, since 8 + 0 + 8 + 0 + 54 + 548 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 80805454794 and 80805454803.

It is not an unprimeable number, because it can be changed into a prime (80805454843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31600386 + ... + 31602942.

Almost surely, 280805454848 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 80805454848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121983120896).

80805454848 is an abundant number, since it is smaller than the sum of its proper divisors (163160786944).

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

80805454848 is a wasteful number, since it uses less digits than its factorization.

80805454848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719 (or 2689 counting only the distinct ones).

The product of its (nonzero) digits is 6553600, while the sum is 54.

The spelling of 80805454848 in words is "eighty billion, eight hundred five million, four hundred fifty-four thousand, eight hundred forty-eight".