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78823049147 is a prime number
BaseRepresentation
bin100100101101000111…
…0000100011110111011
321112110022110202221122
41021122032010132323
52242412200033042
6100113311255455
75460210602003
oct1113216043673
9245408422848
1078823049147
1130479613527
121333981a58b
1375823508ab
143b5a729003
1520b4ed77d2
hex125a3847bb

78823049147 has 2 divisors, whose sum is σ = 78823049148. Its totient is φ = 78823049146.

The previous prime is 78823049117. The next prime is 78823049183. The reversal of 78823049147 is 74194032887.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78823049147 - 28 = 78823048891 is a prime.

It is not a weakly prime, because it can be changed into another prime (78823049117) 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 as a sum of consecutive naturals, namely, 39411524573 + 39411524574.

It is an arithmetic number, because the mean of its divisors is an integer number (39411524574).

Almost surely, 278823049147 is an apocalyptic number.

78823049147 is a deficient number, since it is larger than the sum of its proper divisors (1).

78823049147 is an equidigital number, since it uses as much as digits as its factorization.

78823049147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 78823049147 in words is "seventy-eight billion, eight hundred twenty-three million, forty-nine thousand, one hundred forty-seven".