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64080473708160 = 273557132379919
BaseRepresentation
bin11101001000111111001011…
…10111110101011010000000
322101220000220101120011100000
432210133211313311122000
531344343302232130120
6344142055131200000
716332442606244520
oct1644374567653200
9271800811504300
1064080473708160
11194664159197a8
12722b284ba6000
13299a9bb989900
1411b77236c1680
15761d308ee990
hex3a47e5df5680

64080473708160 has 2304 divisors, whose sum is σ = 285039675648000. Its totient is φ = 13469929095168.

The previous prime is 64080473708093. The next prime is 64080473708161. The reversal of 64080473708160 is 6180737408046.

64080473708160 is a `hidden beast` number, since 6 + 4 + 0 + 8 + 0 + 473 + 7 + 0 + 8 + 160 = 666.

It is a super-2 number, since 2×640804737081602 (a number of 28 digits) contains 22 as substring.

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 = 64080473708097 and 64080473708106.

It is not an unprimeable number, because it can be changed into a prime (64080473708161) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 69728480181 + ... + 69728481099.

It is an arithmetic number, because the mean of its divisors is an integer number (123715137000).

Almost surely, 264080473708160 is an apocalyptic number.

64080473708160 is a gapful number since it is divisible by the number (60) 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 64080473708160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142519837824000).

64080473708160 is an abundant number, since it is smaller than the sum of its proper divisors (220959201939840).

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

64080473708160 is a wasteful number, since it uses less digits than its factorization.

64080473708160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 64080473708160 in words is "sixty-four trillion, eighty billion, four hundred seventy-three million, seven hundred eight thousand, one hundred sixty".