206155503330 has 192 divisors, whose sum is σ = 583497198720. Its totient is φ = 46473563136.

The previous prime is 206155503317. The next prime is 206155503349. The reversal of 206155503330 is 33305551602.

It is a junction number, because it is equal to n+sod(n) for n = 206155503291 and 206155503300.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 57955912 + ... + 57959468.

It is an arithmetic number, because the mean of its divisors is an integer number (3039047910).

Almost surely, 2^206155503330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206155503330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291748599360).

206155503330 is an abundant number, since it is smaller than the sum of its proper divisors (377341695390).

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

206155503330 is a wasteful number, since it uses less digits than its factorization.

206155503330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113 (or 4106 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 33.

The spelling of 206155503330 in words is "two hundred six billion, one hundred fifty-five million, five hundred three thousand, three hundred thirty".