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128587458716 = 22128325056013
BaseRepresentation
bin111011111000001101…
…0001110100010011100
3110021220110222201020222
41313300122032202130
54101321342134331
6135023335300512
712201342236123
oct1676032164234
9407813881228
10128587458716
114a5962a4a42
1220b0781a738
13c1833548a2
14631ba50aba
153528d42b7b
hex1df068e89c

128587458716 has 12 divisors (see below), whose sum is σ = 225203453832. Its totient is φ = 64243614768.

The previous prime is 128587458683. The next prime is 128587458733. The reversal of 128587458716 is 617854785821.

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 3 ways as a sum of consecutive naturals, for example, 12522875 + ... + 12533138.

It is an arithmetic number, because the mean of its divisors is an integer number (18766954486).

Almost surely, 2128587458716 is an apocalyptic number.

It is an amenable number.

128587458716 is a deficient number, since it is larger than the sum of its proper divisors (96615995116).

128587458716 is a wasteful number, since it uses less digits than its factorization.

128587458716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25057300 (or 25057298 counting only the distinct ones).

The product of its digits is 30105600, while the sum is 62.

The spelling of 128587458716 in words is "one hundred twenty-eight billion, five hundred eighty-seven million, four hundred fifty-eight thousand, seven hundred sixteen".

Divisors: 1 2 4 1283 2566 5132 25056013 50112026 100224052 32146864679 64293729358 128587458716