2205716605664 has 96 divisors (see below), whose sum is σ = 5171570548704. Its totient is φ = 912797614080.

The previous prime is 2205716605649. The next prime is 2205716605669. The reversal of 2205716605664 is 4665066175022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205716605669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2967449 + ... + 3635544.

It is an arithmetic number, because the mean of its divisors is an integer number (53870526549).

Almost surely, 2^{2205716605664} is an apocalyptic number.

It is an amenable number.

2205716605664 is an abundant number, since it is smaller than the sum of its proper divisors (2965853943040).

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

2205716605664 is a wasteful number, since it uses less digits than its factorization.

2205716605664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6603100 (or 6603092 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 2205716605664 in words is "two trillion, two hundred five billion, seven hundred sixteen million, six hundred five thousand, six hundred sixty-four".