206555406030 has 96 divisors (see below), whose sum is σ = 549792696960. Its totient is φ = 53788838400.

The previous prime is 206555405993. The next prime is 206555406077. The reversal of 206555406030 is 30604555602.

It is a happy number.

206555406030 is a `hidden beast` number, since 2 + 0 + 6 + 5 + 5 + 5 + 40 + 603 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 507931 + ... + 819209.

It is an arithmetic number, because the mean of its divisors is an integer number (5727007260).

Almost surely, 2^206555406030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206555406030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274896348480).

206555406030 is an abundant number, since it is smaller than the sum of its proper divisors (343237290930).

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

206555406030 is a wasteful number, since it uses less digits than its factorization.

206555406030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311466 (or 311463 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 206555406030 in words is "two hundred six billion, five hundred fifty-five million, four hundred six thousand, thirty".