20202018606 has 72 divisors (see below), whose sum is σ = 55546207704. Its totient is φ = 5247275040.

The previous prime is 20202018569. The next prime is 20202018607. The reversal of 20202018606 is 60681020202.

20202018606 is a `hidden beast` number, since 2 + 0 + 20 + 20 + 18 + 606 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20202018606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202018607) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1031425 + ... + 1050828.

It is an arithmetic number, because the mean of its divisors is an integer number (771475107).

Almost surely, 2^20202018606 is an apocalyptic number.

20202018606 is an abundant number, since it is smaller than the sum of its proper divisors (35344189098).

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

20202018606 is a wasteful number, since it uses less digits than its factorization.

20202018606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082286 (or 2082276 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 20202018606 its reverse (60681020202), we get a palindrome (80883038808).

The spelling of 20202018606 in words is "twenty billion, two hundred two million, eighteen thousand, six hundred six".