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80904285343 = 71075072
BaseRepresentation
bin100101101011001000…
…1010110110010011111
321201211100200112021201
41023112101112302133
52311142444112333
6101100015340331
75562612036010
oct1132621266237
9251740615251
1080904285343
11313473a6042
121381a8216a7
13782459bbbb
143cb6ccd007
152187a9517d
hex12d6456c9f

80904285343 has 6 divisors (see below), whose sum is σ = 92462900456. Its totient is φ = 69345885252.

The previous prime is 80904285337. The next prime is 80904285379. The reversal of 80904285343 is 34358240908.

It is not a de Polignac number, because 80904285343 - 25 = 80904285311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80904285293 and 80904285302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80904285383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 698796 + ... + 806302.

Almost surely, 280904285343 is an apocalyptic number.

80904285343 is a deficient number, since it is larger than the sum of its proper divisors (11558615113).

80904285343 is an frugal number, since it uses more digits than its factorization.

80904285343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215021 (or 107514 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 80904285343 in words is "eighty billion, nine hundred four million, two hundred eighty-five thousand, three hundred forty-three".

Divisors: 1 7 107507 752549 11557755049 80904285343