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9966554290 = 2571141315697
BaseRepresentation
bin10010100100000110…
…11000110010110010
3221201120211102020101
421102003120302302
5130402414214130
64324545503014
7501660212410
oct112203306262
927646742211
109966554290
114254950830
121b21941a6a
13c2aaaa004
146a79382b0
153d4ea31ca
hex2520d8cb2

9966554290 has 64 divisors (see below), whose sum is σ = 22912098048. Its totient is φ = 3030681600.

The previous prime is 9966554287. The next prime is 9966554303. The reversal of 9966554290 is 924556699.

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 126279 + ... + 189418.

It is an arithmetic number, because the mean of its divisors is an integer number (358001532).

Almost surely, 29966554290 is an apocalyptic number.

9966554290 is the 63140-th heptagonal number.

9966554290 is an abundant number, since it is smaller than the sum of its proper divisors (12945543758).

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

9966554290 is a wasteful number, since it uses less digits than its factorization.

9966554290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315763.

The product of its (nonzero) digits is 5248800, while the sum is 55.

The square root of 9966554290 is about 99832.6313887398. The cubic root of 9966554290 is about 2152.0301206899.

The spelling of 9966554290 in words is "nine billion, nine hundred sixty-six million, five hundred fifty-four thousand, two hundred ninety".

Divisors: 1 2 5 7 10 11 14 22 35 41 55 70 77 82 110 154 205 287 385 410 451 574 770 902 1435 2255 2870 3157 4510 6314 15785 31570 315697 631394 1578485 2209879 3156970 3472667 4419758 6945334 11049395 12943577 17363335 22098790 24308669 25887154 34726670 48617338 64717885 90605039 121543345 129435770 142379347 181210078 243086690 284758694 453025195 711896735 906050390 996655429 1423793470 1993310858 4983277145 9966554290