167978384579 has 2 divisors, whose sum is σ = 167978384580. Its totient is φ = 167978384578.

The previous prime is 167978384569. The next prime is 167978384657. The reversal of 167978384579 is 975483879761.

167978384579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 167978384579 - 2¹² = 167978380483 is a prime.

It is not a weakly prime, because it can be changed into another prime (167978384569) 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, 83989192289 + 83989192290.

It is an arithmetic number, because the mean of its divisors is an integer number (83989192290).

Almost surely, 2^167978384579 is an apocalyptic number.

167978384579 is a deficient number, since it is larger than the sum of its proper divisors (1).

167978384579 is an equidigital number, since it uses as much as digits as its factorization.

167978384579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 640120320, while the sum is 74.

The spelling of 167978384579 in words is "one hundred sixty-seven billion, nine hundred seventy-eight million, three hundred eighty-four thousand, five hundred seventy-nine".