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80312387450 = 2526723973847
BaseRepresentation
bin100101011001011111…
…1011100011101111010
321200022002221000000112
41022302333130131322
52303434432344300
6100521153104322
75542134013121
oct1126277343572
9250262830015
1080312387450
1131073281429
12136945580a2
13775ba7c069
143c5c454ab8
152150b27e35
hex12b2fdc77a

80312387450 has 24 divisors (see below), whose sum is σ = 151610614752. Its totient is φ = 31645476720.

The previous prime is 80312387423. The next prime is 80312387473. The reversal of 80312387450 is 5478321308.

It is a junction number, because it is equal to n+sod(n) for n = 80312387398 and 80312387407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11983574 + ... + 11990273.

It is an arithmetic number, because the mean of its divisors is an integer number (6317108948).

Almost surely, 280312387450 is an apocalyptic number.

80312387450 is a deficient number, since it is larger than the sum of its proper divisors (71298227302).

80312387450 is a wasteful number, since it uses less digits than its factorization.

80312387450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23973926 (or 23973921 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 80312387450 in words is "eighty billion, three hundred twelve million, three hundred eighty-seven thousand, four hundred fifty".

Divisors: 1 2 5 10 25 50 67 134 335 670 1675 3350 23973847 47947694 119869235 239738470 599346175 1198692350 1606247749 3212495498 8031238745 16062477490 40156193725 80312387450