2605163304720 has 80 divisors (see below), whose sum is σ = 8114281313472. Its totient is φ = 691417735680.

The previous prime is 2605163304677. The next prime is 2605163304749. The reversal of 2605163304720 is 274033615062.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25671747 + ... + 25773026.

Almost surely, 2^{2605163304720} is an apocalyptic number.

2605163304720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605163304720 is an abundant number, since it is smaller than the sum of its proper divisors (5509118008752).

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

2605163304720 is a wasteful number, since it uses less digits than its factorization.

2605163304720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51445000 (or 51444994 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

Adding to 2605163304720 its reverse (274033615062), we get a palindrome (2879196919782).

The spelling of 2605163304720 in words is "two trillion, six hundred five billion, one hundred sixty-three million, three hundred four thousand, seven hundred twenty".