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68255188288 = 2671491022519
BaseRepresentation
bin111111100100010100…
…111000010101000000
320112011211011211011121
4333210110320111000
52104241312011123
651204521322024
74634266346020
oct774424702500
9215154154147
1068255188288
1126a46302221
121128a636314
136589b0b3a1
143436dc7a80
151b9735975d
hexfe4538540

68255188288 has 56 divisors (see below), whose sum is σ = 155832048000. Its totient is φ = 29055871488.

The previous prime is 68255188259. The next prime is 68255188297. The reversal of 68255188288 is 88288155286.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444508 + ... + 578011.

Almost surely, 268255188288 is an apocalyptic number.

It is an amenable number.

68255188288 is an abundant number, since it is smaller than the sum of its proper divisors (87576859712).

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

68255188288 is a wasteful number, since it uses less digits than its factorization.

68255188288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022687 (or 1022677 counting only the distinct ones).

The product of its digits is 19660800, while the sum is 61.

The spelling of 68255188288 in words is "sixty-eight billion, two hundred fifty-five million, one hundred eighty-eight thousand, two hundred eighty-eight".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 149 224 298 448 596 1043 1192 2086 2384 4172 4768 8344 9536 16688 33376 66752 1022519 2045038 4090076 7157633 8180152 14315266 16360304 28630532 32720608 57261064 65441216 114522128 152355331 229044256 304710662 458088512 609421324 1066487317 1218842648 2132974634 2437685296 4265949268 4875370592 8531898536 9750741184 17063797072 34127594144 68255188288