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128008071064 = 23291361405407
BaseRepresentation
bin111011100110111100…
…0000010011110011000
3110020102002202202211001
41313031320002132120
54044130031233224
6134450041114344
712151105436236
oct1671570023630
9406362682731
10128008071064
114a319245475
12209857889b4
13c0c02c5063
1462a4b11956
1534e3047544
hex1dcde02798

128008071064 has 32 divisors (see below), whose sum is σ = 248474563200. Its totient is φ = 61751441920.

The previous prime is 128008071041. The next prime is 128008071101. The reversal of 128008071064 is 460170800821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113049 + ... + 518455.

It is an arithmetic number, because the mean of its divisors is an integer number (7764830100).

Almost surely, 2128008071064 is an apocalyptic number.

It is an amenable number.

128008071064 is a deficient number, since it is larger than the sum of its proper divisors (120466492136).

128008071064 is a wasteful number, since it uses less digits than its factorization.

128008071064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406803 (or 406799 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

Adding to 128008071064 its reverse (460170800821), we get a palindrome (588178871885).

The spelling of 128008071064 in words is "one hundred twenty-eight billion, eight million, seventy-one thousand, sixty-four".

Divisors: 1 2 4 8 29 58 116 232 1361 2722 5444 10888 39469 78938 157876 315752 405407 810814 1621628 3243256 11756803 23513606 47027212 94054424 551758927 1103517854 2207035708 4414071416 16001008883 32002017766 64004035532 128008071064