205602648612 has 12 divisors (see below), whose sum is σ = 479739513456. Its totient is φ = 68534216200.

The previous prime is 205602648583. The next prime is 205602648619. The reversal of 205602648612 is 216846206502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (205602648619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8566777014 + ... + 8566777037.

It is an arithmetic number, because the mean of its divisors is an integer number (39978292788).

Almost surely, 2^205602648612 is an apocalyptic number.

It is an amenable number.

205602648612 is an abundant number, since it is smaller than the sum of its proper divisors (274136864844).

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

205602648612 is a wasteful number, since it uses less digits than its factorization.

205602648612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17133554058 (or 17133554056 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 205602648612 in words is "two hundred five billion, six hundred two million, six hundred forty-eight thousand, six hundred twelve".