206765309504 has 28 divisors (see below), whose sum is σ = 441861444444. Its totient is φ = 95430142464.

The previous prime is 206765309473. The next prime is 206765309551. The reversal of 206765309504 is 405903567602.

It can be written as a sum of positive squares in 2 ways, for example, as 75981819904 + 130783489600 = 275648^2 + 361640^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124257167 + ... + 124258830.

It is an arithmetic number, because the mean of its divisors is an integer number (15780765873).

Almost surely, 2^206765309504 is an apocalyptic number.

It is an amenable number.

206765309504 is an abundant number, since it is smaller than the sum of its proper divisors (235096134940).

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

206765309504 is a wasteful number, since it uses less digits than its factorization.

206765309504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248516022 (or 248516012 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 206765309504 in words is "two hundred six billion, seven hundred sixty-five million, three hundred nine thousand, five hundred four".