205248508887 has 8 divisors (see below), whose sum is σ = 276175364080. Its totient is φ = 135576996480.

The previous prime is 205248508877. The next prime is 205248508901. The reversal of 205248508887 is 788805842502.

It is a happy number.

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

It is not a de Polignac number, because 205248508887 - 2¹¹ = 205248506839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205248508837) 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, 313835314 + ... + 313835967.

It is an arithmetic number, because the mean of its divisors is an integer number (34521920510).

Almost surely, 2^205248508887 is an apocalyptic number.

205248508887 is a deficient number, since it is larger than the sum of its proper divisors (70926855193).

205248508887 is a wasteful number, since it uses less digits than its factorization.

205248508887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627671393.

The product of its (nonzero) digits is 11468800, while the sum is 57.

The spelling of 205248508887 in words is "two hundred five billion, two hundred forty-eight million, five hundred eight thousand, eight hundred eighty-seven".