205230520550 has 24 divisors (see below), whose sum is σ = 416431384632. Its totient is φ = 74629280000.

The previous prime is 205230520531. The next prime is 205230520601. The reversal of 205230520550 is 55025032502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186572651 + ... + 186573750.

It is an arithmetic number, because the mean of its divisors is an integer number (17351307693).

Almost surely, 2^205230520550 is an apocalyptic number.

205230520550 is an abundant number, since it is smaller than the sum of its proper divisors (211200864082).

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

205230520550 is a wasteful number, since it uses less digits than its factorization.

205230520550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373146424 (or 373146419 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 29.

The spelling of 205230520550 in words is "two hundred five billion, two hundred thirty million, five hundred twenty thousand, five hundred fifty".