20085522578 has 32 divisors (see below), whose sum is σ = 33139858752. Its totient is φ = 9054331200.

The previous prime is 20085522577. The next prime is 20085522599. The reversal of 20085522578 is 87522558002.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20085522577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1478525 + ... + 1492047.

It is an arithmetic number, because the mean of its divisors is an integer number (1035620586).

Almost surely, 2^20085522578 is an apocalyptic number.

20085522578 is a deficient number, since it is larger than the sum of its proper divisors (13054336174).

20085522578 is a wasteful number, since it uses less digits than its factorization.

20085522578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14090.

The product of its (nonzero) digits is 448000, while the sum is 44.

The spelling of 20085522578 in words is "twenty billion, eighty-five million, five hundred twenty-two thousand, five hundred seventy-eight".