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80235273361 = 283283516867
BaseRepresentation
bin100101010111001100…
…1010001110010010001
321200002201211012101011
41022232121101302101
52303310212221421
6100505400210521
75540206366525
oct1125631216221
9250081735334
1080235273361
11310337a1481
1213672769a41
137748abc419
143c520ddd85
152148e944e1
hex12ae651c91

80235273361 has 4 divisors (see below), whose sum is σ = 80518790512. Its totient is φ = 79951756212.

The previous prime is 80235273359. The next prime is 80235273379. The reversal of 80235273361 is 16337253208.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80235273361 - 21 = 80235273359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80235276361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141758151 + ... + 141758716.

It is an arithmetic number, because the mean of its divisors is an integer number (20129697628).

Almost surely, 280235273361 is an apocalyptic number.

It is an amenable number.

80235273361 is a deficient number, since it is larger than the sum of its proper divisors (283517151).

80235273361 is a wasteful number, since it uses less digits than its factorization.

80235273361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283517150.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 80235273361 in words is "eighty billion, two hundred thirty-five million, two hundred seventy-three thousand, three hundred sixty-one".

Divisors: 1 283 283516867 80235273361