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80840555173 = 743287993287
BaseRepresentation
bin100101101001001111…
…0001111101010100101
321201122220202200221001
41023102132033222211
52311030140231143
6101045421353301
75561206244530
oct1132236175245
9251586680831
1080840555173
1131314427684
1213801408831
137814317141
143cac65da17
1521821a714d
hex12d278faa5

80840555173 has 16 divisors (see below), whose sum is σ = 94571642880. Its totient is φ = 67656231216.

The previous prime is 80840555167. The next prime is 80840555221. The reversal of 80840555173 is 37155504808.

It is not a de Polignac number, because 80840555173 - 29 = 80840554661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80840555473) 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, 819936 + ... + 913222.

It is an arithmetic number, because the mean of its divisors is an integer number (5910727680).

Almost surely, 280840555173 is an apocalyptic number.

It is an amenable number.

80840555173 is a deficient number, since it is larger than the sum of its proper divisors (13731087707).

80840555173 is a wasteful number, since it uses less digits than its factorization.

80840555173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96216.

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 80840555173 in words is "eighty billion, eight hundred forty million, five hundred fifty-five thousand, one hundred seventy-three".

Divisors: 1 7 43 301 2879 20153 93287 123797 653009 866579 4011341 28079387 268573273 1880012911 11548650739 80840555173