84428178179 has 2 divisors, whose sum is σ = 84428178180. Its totient is φ = 84428178178.

The previous prime is 84428178143. The next prime is 84428178193. The reversal of 84428178179 is 97187182448.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84428178179 is a prime.

It is not a weakly prime, because it can be changed into another prime (84428148179) 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 as a sum of consecutive naturals, namely, 42214089089 + 42214089090.

It is an arithmetic number, because the mean of its divisors is an integer number (42214089090).

Almost surely, 2^84428178179 is an apocalyptic number.

84428178179 is a deficient number, since it is larger than the sum of its proper divisors (1).

84428178179 is an equidigital number, since it uses as much as digits as its factorization.

84428178179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7225344, while the sum is 59.

The spelling of 84428178179 in words is "eighty-four billion, four hundred twenty-eight million, one hundred seventy-eight thousand, one hundred seventy-nine".