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128008071066 = 2321334678511
BaseRepresentation
bin111011100110111100…
…0000010011110011010
3110020102002202202211010
41313031320002132122
54044130031233231
6134450041114350
712151105436241
oct1671570023632
9406362682733
10128008071066
114a319245477
12209857889b6
13c0c02c5065
1462a4b11958
1534e3047546
hex1dcde0279a

128008071066 has 8 divisors (see below), whose sum is σ = 256016142144. Its totient is φ = 42669357020.

The previous prime is 128008071041. The next prime is 128008071101. The reversal of 128008071066 is 660170800821.

It is a sphenic number, since it is the product of 3 distinct primes.

128008071066 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10667339250 + ... + 10667339261.

It is an arithmetic number, because the mean of its divisors is an integer number (32002017768).

Almost surely, 2128008071066 is an apocalyptic number.

128008071066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128008071066 is a wasteful number, since it uses less digits than its factorization.

128008071066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21334678516.

The product of its (nonzero) digits is 32256, while the sum is 39.

Adding to 128008071066 its reverse (660170800821), we get a palindrome (788178871887).

The spelling of 128008071066 in words is "one hundred twenty-eight billion, eight million, seventy-one thousand, sixty-six".

Divisors: 1 2 3 6 21334678511 42669357022 64004035533 128008071066