205516352660 has 24 divisors (see below), whose sum is σ = 454299306720. Its totient is φ = 77879880864.

The previous prime is 205516352627. The next prime is 205516352677. The reversal of 205516352660 is 66253615502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270415874 + ... + 270416633.

It is an arithmetic number, because the mean of its divisors is an integer number (18929137780).

Almost surely, 2^205516352660 is an apocalyptic number.

205516352660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205516352660 is an abundant number, since it is smaller than the sum of its proper divisors (248782954060).

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

205516352660 is a wasteful number, since it uses less digits than its factorization.

205516352660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540832535 (or 540832533 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 205516352660 in words is "two hundred five billion, five hundred sixteen million, three hundred fifty-two thousand, six hundred sixty".