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80144287215 = 3537391428979
BaseRepresentation
bin100101010100011111…
…0001100010111101111
321122212101121121211220
41022220332030113233
52303113414142330
6100452350114423
75535023126016
oct1125076142757
9248771547756
1080144287215
1130a973a7213
12136481aba13
137732cb3675
143c43db7a7d
152140ec0710
hex12a8f8c5ef

80144287215 has 16 divisors (see below), whose sum is σ = 128265244800. Its totient is φ = 42732158112.

The previous prime is 80144287213. The next prime is 80144287217. The reversal of 80144287215 is 51278244108.

It is an interprime number because it is at equal distance from previous prime (80144287213) and next prime (80144287217).

It is not a de Polignac number, because 80144287215 - 21 = 80144287213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80144287213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658405 + ... + 770574.

It is an arithmetic number, because the mean of its divisors is an integer number (8016577800).

Almost surely, 280144287215 is an apocalyptic number.

80144287215 is a deficient number, since it is larger than the sum of its proper divisors (48120957585).

80144287215 is a wasteful number, since it uses less digits than its factorization.

80144287215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432726.

The product of its (nonzero) digits is 143360, while the sum is 42.

The spelling of 80144287215 in words is "eighty billion, one hundred forty-four million, two hundred eighty-seven thousand, two hundred fifteen".

Divisors: 1 3 5 15 3739 11217 18695 56085 1428979 4286937 7144895 21434685 5342952481 16028857443 26714762405 80144287215