2566126120 has 32 divisors (see below), whose sum is σ = 5929835400. Its totient is φ = 998707968.

The previous prime is 2566126067. The next prime is 2566126141. The reversal of 2566126120 is 216216652.

It can be written as a sum of positive squares in 4 ways, for example, as 2354772676 + 211353444 = 48526^2 + 14538^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 865455 + ... + 868414.

Almost surely, 2^2566126120 is an apocalyptic number.

2566126120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2566126120 is an abundant number, since it is smaller than the sum of its proper divisors (3363709280).

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

2566126120 is a wasteful number, since it uses less digits than its factorization.

2566126120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733917 (or 1733913 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2566126120 is about 50656.9454270587. The cubic root of 2566126120 is about 1369.0710878530.

The spelling of 2566126120 in words is "two billion, five hundred sixty-six million, one hundred twenty-six thousand, one hundred twenty".