205772240563 has 8 divisors (see below), whose sum is σ = 206404140816. Its totient is φ = 205141269600.

The previous prime is 205772240561. The next prime is 205772240591. The reversal of 205772240563 is 365042277502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205772240563 - 2¹ = 205772240561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205772240561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212520 + ... + 675802.

It is an arithmetic number, because the mean of its divisors is an integer number (25800517602).

Almost surely, 2^205772240563 is an apocalyptic number.

205772240563 is a deficient number, since it is larger than the sum of its proper divisors (631900253).

205772240563 is an equidigital number, since it uses as much as digits as its factorization.

205772240563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464645.

The product of its (nonzero) digits is 705600, while the sum is 43.

The spelling of 205772240563 in words is "two hundred five billion, seven hundred seventy-two million, two hundred forty thousand, five hundred sixty-three".