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80605404360 = 233251317223377
BaseRepresentation
bin100101100010001110…
…1001101110011001000
321201001112021210122200
41023010131031303020
52310034440414420
6101010221320200
75552322426615
oct1130435156310
9251045253580
1080605404360
1131203716368
1213756706060
1377a76a3550
143c8932b50c
15216b707b90
hex12c474dcc8

80605404360 has 96 divisors (see below), whose sum is σ = 282118931640. Its totient is φ = 19841329152.

The previous prime is 80605404359. The next prime is 80605404367. The reversal of 80605404360 is 6340450608.

80605404360 is a `hidden beast` number, since 8 + 0 + 605 + 4 + 0 + 43 + 6 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 64052523396 + 16552880964 = 253086^2 + 128658^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (80605404367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8607009 + ... + 8616368.

Almost surely, 280605404360 is an apocalyptic number.

It is an amenable number.

80605404360 is an abundant number, since it is smaller than the sum of its proper divisors (201513527280).

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

80605404360 is a wasteful number, since it uses less digits than its factorization.

80605404360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17223407 (or 17223400 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 80605404360 its reverse (6340450608), we get a palindrome (86945854968).

The spelling of 80605404360 in words is "eighty billion, six hundred five million, four hundred four thousand, three hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 13 15 18 20 24 26 30 36 39 40 45 52 60 65 72 78 90 104 117 120 130 156 180 195 234 260 312 360 390 468 520 585 780 936 1170 1560 2340 4680 17223377 34446754 51670131 68893508 86116885 103340262 137787016 155010393 172233770 206680524 223903901 258350655 310020786 344467540 413361048 447807802 516701310 620041572 671711703 688935080 775051965 895615604 1033402620 1119519505 1240083144 1343423406 1550103930 1791231208 2015135109 2066805240 2239039010 2686846812 3100207860 3358558515 4030270218 4478078020 5373693624 6200415720 6717117030 8060540436 8956156040 10075675545 13434234060 16121080872 20151351090 26868468120 40302702180 80605404360