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80502752805 = 35139118132693
BaseRepresentation
bin100101011111001010…
…1101000011000100101
321200210101010120012020
41022332111220120211
52304332201042210
6100552113213353
75546635052136
oct1127625503045
9250711116166
1080502752805
1131160783772
1213728261259
13778c341b97
143c79849c8d
1521626cc770
hex12be568625

80502752805 has 32 divisors (see below), whose sum is σ = 129844874880. Its totient is φ = 42588522240.

The previous prime is 80502752789. The next prime is 80502752809. The reversal of 80502752805 is 50825720508.

It is not a de Polignac number, because 80502752805 - 24 = 80502752789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80502752809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2446039 + ... + 2478731.

It is an arithmetic number, because the mean of its divisors is an integer number (4057652340).

Almost surely, 280502752805 is an apocalyptic number.

It is an amenable number.

80502752805 is a deficient number, since it is larger than the sum of its proper divisors (49342122075).

80502752805 is a wasteful number, since it uses less digits than its factorization.

80502752805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34021.

The product of its (nonzero) digits is 224000, while the sum is 42.

The spelling of 80502752805 in words is "eighty billion, five hundred two million, seven hundred fifty-two thousand, eight hundred five".

Divisors: 1 3 5 15 139 417 695 1181 2085 3543 5905 17715 32693 98079 163465 164159 490395 492477 820795 2462385 4544327 13632981 22721635 38610433 68164905 115831299 193052165 579156495 5366850187 16100550561 26834250935 80502752805