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79847502793 = 1721914541523
BaseRepresentation
bin100101001011101001…
…0000011001111001001
321122002201011102011021
41022113102003033021
52302011430042133
6100403105032441
75524460401222
oct1122722031711
9248081142137
1079847502793
1130954919733
1213584925721
1376b6670396
143c16800249
152124de952d
hex12974833c9

79847502793 has 12 divisors (see below), whose sum is σ = 89284957360. Its totient is φ = 71195291712.

The previous prime is 79847502751. The next prime is 79847502871. The reversal of 79847502793 is 39720574897.

It is a de Polignac number, because none of the positive numbers 2k-79847502793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79847502703) 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 11 ways as a sum of consecutive naturals, for example, 7265271 + ... + 7276252.

Almost surely, 279847502793 is an apocalyptic number.

It is an amenable number.

79847502793 is a deficient number, since it is larger than the sum of its proper divisors (9437454567).

79847502793 is a wasteful number, since it uses less digits than its factorization.

79847502793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14541576 (or 14541559 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 61.

The spelling of 79847502793 in words is "seventy-nine billion, eight hundred forty-seven million, five hundred two thousand, seven hundred ninety-three".

Divisors: 1 17 19 289 323 5491 14541523 247205891 276288937 4202500147 4696911929 79847502793