206030213603 has 4 divisors (see below), whose sum is σ = 206641579560. Its totient is φ = 205418847648.

The previous prime is 206030213591. The next prime is 206030213611. The reversal of 206030213603 is 306312030602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206030213603 - 2¹⁰ = 206030212579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206030213633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305682473 + ... + 305683146.

It is an arithmetic number, because the mean of its divisors is an integer number (51660394890).

Almost surely, 2^206030213603 is an apocalyptic number.

206030213603 is a deficient number, since it is larger than the sum of its proper divisors (611365957).

206030213603 is an equidigital number, since it uses as much as digits as its factorization.

206030213603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611365956.

The product of its (nonzero) digits is 3888, while the sum is 26.

The spelling of 206030213603 in words is "two hundred six billion, thirty million, two hundred thirteen thousand, six hundred three".