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668048858735 = 53147611503311
BaseRepresentation
bin10011011100010101101…
…00001001111001101111
32100212100110210020201112
421232022310021321233
541421131001434420
61230521501302235
766156605415116
oct11561264117157
92325313706645
10668048858735
1123835518a325
12a958026497b
134acc5aa65ab
1424495abcc7d
151259e01c8c5
hex9b8ad09e6f

668048858735 has 32 divisors (see below), whose sum is σ = 858980450304. Its totient is φ = 497896272000.

The previous prime is 668048858681. The next prime is 668048858777. The reversal of 668048858735 is 537858840866.

It is not a de Polignac number, because 668048858735 - 228 = 667780423279 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307271 + ... + 1196040.

It is an arithmetic number, because the mean of its divisors is an integer number (26843139072).

Almost surely, 2668048858735 is an apocalyptic number.

668048858735 is a deficient number, since it is larger than the sum of its proper divisors (190931591569).

668048858735 is a wasteful number, since it uses less digits than its factorization.

668048858735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503455.

The product of its (nonzero) digits is 309657600, while the sum is 68.

The spelling of 668048858735 in words is "six hundred sixty-eight billion, forty-eight million, eight hundred fifty-eight thousand, seven hundred thirty-five".

Divisors: 1 5 31 47 61 155 235 305 1457 1891 2867 7285 9455 14335 88877 444385 1503311 7516555 46602641 70655617 91701971 233013205 353278085 458509855 2190324127 2842761101 4309992637 10951620635 14213805505 21549963185 133609771747 668048858735