20590504066 has 16 divisors (see below), whose sum is σ = 33712967808. Its totient is φ = 9353926800.

The previous prime is 20590504013. The next prime is 20590504069. The reversal of 20590504066 is 66040509502.

It is not an unprimeable number, because it can be changed into a prime (20590504069) 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 7 ways as a sum of consecutive naturals, for example, 230490 + ... + 307093.

It is an arithmetic number, because the mean of its divisors is an integer number (2107060488).

Almost surely, 2^20590504066 is an apocalyptic number.

20590504066 is a deficient number, since it is larger than the sum of its proper divisors (13122463742).

20590504066 is a wasteful number, since it uses less digits than its factorization.

20590504066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539337.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 20590504066 in words is "twenty billion, five hundred ninety million, five hundred four thousand, sixty-six".