206411225428 has 12 divisors (see below), whose sum is σ = 365278292820. Its totient is φ = 102045998912.

The previous prime is 206411225407. The next prime is 206411225443. The reversal of 206411225428 is 824522114602.

It can be written as a sum of positive squares in 2 ways, for example, as 18525387664 + 187885837764 = 136108^2 + 433458^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289903051 + ... + 289903762.

It is an arithmetic number, because the mean of its divisors is an integer number (30439857735).

Almost surely, 2^206411225428 is an apocalyptic number.

It is an amenable number.

206411225428 is a deficient number, since it is larger than the sum of its proper divisors (158867067392).

206411225428 is a wasteful number, since it uses less digits than its factorization.

206411225428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579806906 (or 579806904 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The spelling of 206411225428 in words is "two hundred six billion, four hundred eleven million, two hundred twenty-five thousand, four hundred twenty-eight".