206008664550 has 96 divisors (see below), whose sum is σ = 550730584320. Its totient is φ = 50661072000.

The previous prime is 206008664527. The next prime is 206008664569. The reversal of 206008664550 is 55466800602.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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, 1999191 + ... + 2099709.

It is an arithmetic number, because the mean of its divisors is an integer number (5736776920).

Almost surely, 2^206008664550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206008664550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275365292160).

206008664550 is an abundant number, since it is smaller than the sum of its proper divisors (344721919770).

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

206008664550 is a wasteful number, since it uses less digits than its factorization.

206008664550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101598 (or 101593 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 206008664550 in words is "two hundred six billion, eight million, six hundred sixty-four thousand, five hundred fifty".