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80282761686 = 2343115986213
BaseRepresentation
bin100101011000100111…
…0011011100111010110
321200020001011212010000
41022301032123213112
52303404341333221
6100514214112130
75541324133461
oct1126116334726
9250201155100
1080282761686
1131058587126
121368664b646
1377558a851a
143c585422d8
15214d224e26
hex12b139b9d6

80282761686 has 40 divisors (see below), whose sum is σ = 185695861824. Its totient is φ = 25897663440.

The previous prime is 80282761661. The next prime is 80282761693. The reversal of 80282761686 is 68616728208.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7988085 + ... + 7998128.

Almost surely, 280282761686 is an apocalyptic number.

80282761686 is an abundant number, since it is smaller than the sum of its proper divisors (105413100138).

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

80282761686 is a wasteful number, since it uses less digits than its factorization.

80282761686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15986258 (or 15986249 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 80282761686 in words is "eighty billion, two hundred eighty-two million, seven hundred sixty-one thousand, six hundred eighty-six".

Divisors: 1 2 3 6 9 18 27 31 54 62 81 93 162 186 279 558 837 1674 2511 5022 15986213 31972426 47958639 95917278 143875917 287751834 431627751 495572603 863255502 991145206 1294883253 1486717809 2589766506 2973435618 4460153427 8920306854 13380460281 26760920562 40141380843 80282761686