206560020030 has 128 divisors (see below), whose sum is σ = 610630272000. Its totient is φ = 43547341824.

The previous prime is 206560020011. The next prime is 206560020031. The reversal of 206560020030 is 30020065602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206560020031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3489621 + ... + 3548319.

It is an arithmetic number, because the mean of its divisors is an integer number (4770549000).

Almost surely, 2^206560020030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206560020030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305315136000).

206560020030 is an abundant number, since it is smaller than the sum of its proper divisors (404070251970).

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

206560020030 is a wasteful number, since it uses less digits than its factorization.

206560020030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60018.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 206560020030 its reverse (30020065602), we get a palindrome (236580085632).

The spelling of 206560020030 in words is "two hundred six billion, five hundred sixty million, twenty thousand, thirty".