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80908420145 = 5753594671583
BaseRepresentation
bin100101101011010000…
…1001000010000110001
321201211122110121011112
41023112201020100301
52311200023421040
6101100244123105
75562662136560
oct1132641102061
9251748417145
1080908420145
113134976a633
1213820096495
1378253b8c27
143cb7687bd7
152188110365
hex12d6848431

80908420145 has 64 divisors (see below), whose sum is σ = 115288842240. Its totient is φ = 53362353408.

The previous prime is 80908420069. The next prime is 80908420163. The reversal of 80908420145 is 54102480908.

It is not a de Polignac number, because 80908420145 - 220 = 80907371569 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51110024 + ... + 51111606.

It is an arithmetic number, because the mean of its divisors is an integer number (1801388160).

Almost surely, 280908420145 is an apocalyptic number.

It is an amenable number.

80908420145 is a deficient number, since it is larger than the sum of its proper divisors (34380422095).

80908420145 is a wasteful number, since it uses less digits than its factorization.

80908420145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174.

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 80908420145 in words is "eighty billion, nine hundred eight million, four hundred twenty thousand, one hundred forty-five".

Divisors: 1 5 7 35 53 59 265 295 371 413 467 1583 1855 2065 2335 3127 3269 7915 11081 15635 16345 21889 24751 27553 55405 83899 93397 109445 123755 137765 173257 192871 419495 466985 587293 653779 739261 866285 964355 1460309 2936465 3268895 3696305 4950041 5174827 7301545 10222163 24750205 25874135 34650287 39180833 43616399 51110815 173251435 195904165 218081995 274265831 305314793 1371329155 1526573965 2311669147 11558345735 16181684029 80908420145