2566120320 has 96 divisors (see below), whose sum is σ = 8861154120. Its totient is φ = 684297216.

The previous prime is 2566120313. The next prime is 2566120339. The reversal of 2566120320 is 230216652.

2566120320 is a `hidden beast` number, since 25 + 6 + 612 + 0 + 3 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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, 216994 + ... + 228513.

Almost surely, 2^2566120320 is an apocalyptic number.

2566120320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2566120320 is an abundant number, since it is smaller than the sum of its proper divisors (6295033800).

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

2566120320 is a wasteful number, since it uses less digits than its factorization.

2566120320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445532 (or 445517 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2566120320 is about 50656.8881792003. Note that the first 3 decimals coincide. The cubic root of 2566120320 is about 1369.0700563866.

Adding to 2566120320 its reverse (230216652), we get a palindrome (2796336972).

The spelling of 2566120320 in words is "two billion, five hundred sixty-six million, one hundred twenty thousand, three hundred twenty".