20466363664 has 20 divisors (see below), whose sum is σ = 40046192460. Its totient is φ = 10131862400.

The previous prime is 20466363647. The next prime is 20466363667. The reversal of 20466363664 is 46636366402.

It can be written as a sum of positive squares in 2 ways, for example, as 11837440000 + 8628923664 = 108800^2 + 92892^2 .

It is not an unprimeable number, because it can be changed into a prime (20466363667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6330799 + ... + 6334030.

It is an arithmetic number, because the mean of its divisors is an integer number (2002309623).

Almost surely, 2^20466363664 is an apocalyptic number.

It is an amenable number.

20466363664 is a deficient number, since it is larger than the sum of its proper divisors (19579828796).

20466363664 is a wasteful number, since it uses less digits than its factorization.

20466363664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12664938 (or 12664932 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 46.

The spelling of 20466363664 in words is "twenty billion, four hundred sixty-six million, three hundred sixty-three thousand, six hundred sixty-four".