168905678578 has 32 divisors (see below), whose sum is σ = 312751281024. Its totient is φ = 66621526272.

The previous prime is 168905678573. The next prime is 168905678609. The reversal of 168905678578 is 875876509861.

168905678578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (168905678573) 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 in 15 ways as a sum of consecutive naturals, for example, 1315600 + ... + 1438267.

It is an arithmetic number, because the mean of its divisors is an integer number (9773477532).

Almost surely, 2^168905678578 is an apocalyptic number.

168905678578 is a deficient number, since it is larger than the sum of its proper divisors (143845602446).

168905678578 is a wasteful number, since it uses less digits than its factorization.

168905678578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754226.

The product of its (nonzero) digits is 203212800, while the sum is 70.

The spelling of 168905678578 in words is "one hundred sixty-eight billion, nine hundred five million, six hundred seventy-eight thousand, five hundred seventy-eight".