20016600205 has 32 divisors (see below), whose sum is σ = 28029830400. Its totient is φ = 13716722880.

The previous prime is 20016600203. The next prime is 20016600221. The reversal of 20016600205 is 50200661002.

It is not a de Polignac number, because 20016600205 - 2¹ = 20016600203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016600203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3651927 + ... + 3657403.

It is an arithmetic number, because the mean of its divisors is an integer number (875932200).

Almost surely, 2^20016600205 is an apocalyptic number.

It is an amenable number.

20016600205 is a deficient number, since it is larger than the sum of its proper divisors (8013230195).

20016600205 is an equidigital number, since it uses as much as digits as its factorization.

20016600205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7634 (or 7620 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The spelling of 20016600205 in words is "twenty billion, sixteen million, six hundred thousand, two hundred five".