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128640593095 = 57231571017847
BaseRepresentation
bin111011111001110010…
…0111010110011000111
3110022001011222012220221
41313303210322303013
54101423442434340
6135032514205211
712202555666630
oct1676344726307
9408034865827
10128640593095
114a613296653
1220b21583807
13c191369851
146324b22887
15352d83b44a
hex1df393acc7

128640593095 has 32 divisors (see below), whose sum is σ = 185264621568. Its totient is φ = 83837939328.

The previous prime is 128640593071. The next prime is 128640593131. The reversal of 128640593095 is 590395046821.

It is a cyclic number.

It is not a de Polignac number, because 128640593095 - 29 = 128640592583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 382539 + ... + 635308.

It is an arithmetic number, because the mean of its divisors is an integer number (5789519424).

Almost surely, 2128640593095 is an apocalyptic number.

128640593095 is a deficient number, since it is larger than the sum of its proper divisors (56624028473).

128640593095 is a wasteful number, since it uses less digits than its factorization.

128640593095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018039.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 128640593095 in words is "one hundred twenty-eight billion, six hundred forty million, five hundred ninety-three thousand, ninety-five".

Divisors: 1 5 7 23 35 115 157 161 785 805 1099 3611 5495 18055 25277 126385 1017847 5089235 7124929 23410481 35624645 117052405 159801979 163873367 799009895 819366835 1118613853 3675445517 5593069265 18377227585 25728118619 128640593095