2566120120 has 64 divisors (see below), whose sum is σ = 6047784000. Its totient is φ = 978075648.

The previous prime is 2566120057. The next prime is 2566120121. The reversal of 2566120120 is 210216652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566120121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242296 + ... + 252664.

It is an arithmetic number, because the mean of its divisors is an integer number (94496625).

Almost surely, 2^2566120120 is an apocalyptic number.

2566120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2566120120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3023892000).

2566120120 is an abundant number, since it is smaller than the sum of its proper divisors (3481663880).

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

2566120120 is a wasteful number, since it uses less digits than its factorization.

2566120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10672 (or 10668 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2566120120 is about 50656.8862051350. The cubic root of 2566120120 is about 1369.0700208188.

Adding to 2566120120 its reverse (210216652), we get a palindrome (2776336772).

The spelling of 2566120120 in words is "two billion, five hundred sixty-six million, one hundred twenty thousand, one hundred twenty".