20063320638 has 32 divisors (see below), whose sum is σ = 40822876800. Its totient is φ = 6571824096.

The previous prime is 20063320619. The next prime is 20063320721. The reversal of 20063320638 is 83602336002.

It is a junction number, because it is equal to n+sod(n) for n = 20063320599 and 20063320608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1020045 + ... + 1039527.

It is an arithmetic number, because the mean of its divisors is an integer number (1275714900).

Almost surely, 2^20063320638 is an apocalyptic number.

20063320638 is an abundant number, since it is smaller than the sum of its proper divisors (20759556162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20063320638 is a wasteful number, since it uses less digits than its factorization.

20063320638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22456.

The product of its (nonzero) digits is 31104, while the sum is 33.

The spelling of 20063320638 in words is "twenty billion, sixty-three million, three hundred twenty thousand, six hundred thirty-eight".