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80834475205 = 5115651260081
BaseRepresentation
bin100101101001000011…
…1000011010011000101
321201122111022210210001
41023102013003103011
52311022111201310
6101045043201301
75561103462631
oct1132207032305
9251574283701
1080834475205
1131310a54710
12137bb376231
137812c98923
143cab919dc1
1521818a593a
hex12d21c34c5

80834475205 has 16 divisors (see below), whose sum is σ = 105838809408. Its totient is φ = 58778080000.

The previous prime is 80834475199. The next prime is 80834475221. The reversal of 80834475205 is 50257443808.

It is not a de Polignac number, because 80834475205 - 25 = 80834475173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180765 + ... + 440845.

It is an arithmetic number, because the mean of its divisors is an integer number (6614925588).

Almost surely, 280834475205 is an apocalyptic number.

It is an amenable number.

80834475205 is a deficient number, since it is larger than the sum of its proper divisors (25004334203).

80834475205 is a wasteful number, since it uses less digits than its factorization.

80834475205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265748.

The product of its (nonzero) digits is 1075200, while the sum is 46.

The spelling of 80834475205 in words is "eighty billion, eight hundred thirty-four million, four hundred seventy-five thousand, two hundred five".

Divisors: 1 5 11 55 5651 28255 62161 260081 310805 1300405 2860891 14304455 1469717731 7348588655 16166895041 80834475205