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80825393285 = 57132131104309
BaseRepresentation
bin100101101000110010…
…0011010000010000101
321201121212020101201122
41023101210122002011
52311012300041120
6101044120403325
75560633336010
oct1132144320205
9251555211648
1080825393285
113130691129a
12137b8316545
137811138c00
143caa634377
152180baea25
hex12d191a085

80825393285 has 48 divisors (see below), whose sum is σ = 120946193280. Its totient is φ = 50768789760.

The previous prime is 80825393237. The next prime is 80825393321. The reversal of 80825393285 is 58239352808.

It is not a de Polignac number, because 80825393285 - 216 = 80825327749 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 722711 + ... + 827019.

It is an arithmetic number, because the mean of its divisors is an integer number (2519712360).

Almost surely, 280825393285 is an apocalyptic number.

It is an amenable number.

80825393285 is a deficient number, since it is larger than the sum of its proper divisors (40120799995).

80825393285 is a wasteful number, since it uses less digits than its factorization.

80825393285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104478 (or 104465 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 80825393285 in words is "eighty billion, eight hundred twenty-five million, three hundred ninety-three thousand, two hundred eighty-five".

Divisors: 1 5 7 13 35 65 91 131 169 455 655 845 917 1183 1703 4585 5915 8515 11921 22139 59605 104309 110695 154973 521545 730163 774865 1356017 3650815 6780085 9492119 13664479 17628221 47460595 68322395 88141105 95651353 123397547 177638227 478256765 616987735 888191135 1243467589 2309296951 6217337945 11546484755 16165078657 80825393285