8422641578 has 16 divisors (see below), whose sum is σ = 13610522016. Its totient is φ = 3886025520.

The previous prime is 8422641541. The next prime is 8422641587. The reversal of 8422641578 is 8751462248.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22373 + ... + 131703.

It is an arithmetic number, because the mean of its divisors is an integer number (850657626).

Almost surely, 2^8422641578 is an apocalyptic number.

8422641578 is a deficient number, since it is larger than the sum of its proper divisors (5187880438).

8422641578 is a wasteful number, since it uses less digits than its factorization.

8422641578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112309.

The product of its digits is 860160, while the sum is 47.

The square root of 8422641578 is about 91774.9507109647. The cubic root of 8422641578 is about 2034.6174891734.

The spelling of 8422641578 in words is "eight billion, four hundred twenty-two million, six hundred forty-one thousand, five hundred seventy-eight".