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55011109986 = 234727197607
BaseRepresentation
bin110011001110111010…
…101110110001100010
312020222211002221020000
4303032322232301202
51400130321004421
641134411000430
73655140501600
oct631672566142
9166884087200
1055011109986
112136a379168
12a7b3139116
135258cbb471
14293c084870
15166e793226
hexcceeaec62

55011109986 has 120 divisors (see below), whose sum is σ = 145411713216. Its totient is φ = 15495928560.

The previous prime is 55011109943. The next prime is 55011109991. The reversal of 55011109986 is 68990111055.

55011109986 is a `hidden beast` number, since 550 + 1 + 1 + 1 + 0 + 9 + 98 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 514795 + ... + 612401.

Almost surely, 255011109986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55011109986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72705856608).

55011109986 is an abundant number, since it is smaller than the sum of its proper divisors (90400603230).

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

55011109986 is a wasteful number, since it uses less digits than its factorization.

55011109986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97706 (or 97690 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 45.

The spelling of 55011109986 in words is "fifty-five billion, eleven million, one hundred nine thousand, nine hundred eighty-six".

Divisors: 1 2 3 6 7 9 14 18 21 27 42 49 54 63 71 81 98 126 142 147 162 189 213 294 378 426 441 497 567 639 882 994 1134 1278 1323 1491 1917 2646 2982 3479 3834 3969 4473 5751 6958 7938 8946 10437 11502 13419 20874 26838 31311 40257 62622 80514 93933 97607 187866 195214 281799 292821 563598 585642 683249 878463 1366498 1756926 2049747 2635389 4099494 4782743 5270778 6149241 6930097 7906167 9565486 12298482 13860194 14348229 15812334 18447723 20790291 28696458 36895446 41580582 43044687 48510679 55343169 62370873 86089374 97021358 110686338 124741746 129134061 145532037 187112619 258268122 291064074 339574753 374225238 387402183 436596111 561337857 679149506 774804366 873192222 1018724259 1122675714 1309788333 2037448518 2619576666 3056172777 3929364999 6112345554 7858729998 9168518331 18337036662 27505554993 55011109986