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80851948359 = 37131372161759
BaseRepresentation
bin100101101001100100…
…1101101001101000111
321201200201012112102220
41023103021231031013
52311041044321414
6101050505503423
75561405136030
oct1132311551507
9251621175386
1080851948359
113131a8a9536
12138051a1b73
1378167a5b80
143cadd87a87
1521831a7ca9
hex12d326d347

80851948359 has 32 divisors (see below), whose sum is σ = 133648650240. Its totient is φ = 42335868672.

The previous prime is 80851948291. The next prime is 80851948399. The reversal of 80851948359 is 95384915808.

It is not a de Polignac number, because 80851948359 - 28 = 80851948103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80851948399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1043479 + ... + 1118280.

It is an arithmetic number, because the mean of its divisors is an integer number (4176520320).

Almost surely, 280851948359 is an apocalyptic number.

80851948359 is a deficient number, since it is larger than the sum of its proper divisors (52796701881).

80851948359 is a wasteful number, since it uses less digits than its factorization.

80851948359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161919.

The product of its (nonzero) digits is 12441600, while the sum is 60.

The spelling of 80851948359 in words is "eighty billion, eight hundred fifty-one million, nine hundred forty-eight thousand, three hundred fifty-nine".

Divisors: 1 3 7 13 21 39 91 137 273 411 959 1781 2877 5343 12467 37401 2161759 6485277 15132313 28102867 45396939 84308601 196720069 296160983 590160207 888482949 2073126881 3850092779 6219380643 11550278337 26950649453 80851948359