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28086389179 is a prime number
BaseRepresentation
bin11010001010000101…
…000100100110111011
32200111101111101211021
4122022011010212323
5430010103423204
620522552443311
72013002240362
oct321205044673
980441441737
1028086389179
1110a03041992
12553a0a9537
132857aa72c4
14150623a7d9
15ae5b2d154
hex68a1449bb

28086389179 has 2 divisors, whose sum is σ = 28086389180. Its totient is φ = 28086389178.

The previous prime is 28086389153. The next prime is 28086389263. The reversal of 28086389179 is 97198368082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28086389179 - 25 = 28086389147 is a prime.

It is a super-2 number, since 2×280863891792 (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28086386179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14043194589 + 14043194590.

It is an arithmetic number, because the mean of its divisors is an integer number (14043194590).

Almost surely, 228086389179 is an apocalyptic number.

28086389179 is a deficient number, since it is larger than the sum of its proper divisors (1).

28086389179 is an equidigital number, since it uses as much as digits as its factorization.

28086389179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 28086389179 in words is "twenty-eight billion, eighty-six million, three hundred eighty-nine thousand, one hundred seventy-nine".