2566121108 has 6 divisors (see below), whose sum is σ = 4490711946. Its totient is φ = 1283060552.

The previous prime is 2566121071. The next prime is 2566121111. The reversal of 2566121108 is 8011216652.

It can be written as a sum of positive squares in only one way, i.e., 1866412804 + 699708304 = 43202^2 + 26452^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 320765135 + ... + 320765142.

It is an arithmetic number, because the mean of its divisors is an integer number (748451991).

Almost surely, 2^2566121108 is an apocalyptic number.

It is an amenable number.

2566121108 is a deficient number, since it is larger than the sum of its proper divisors (1924590838).

2566121108 is a wasteful number, since it uses less digits than its factorization.

2566121108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641530281 (or 641530279 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 2566121108 is about 50656.8959570166. The cubic root of 2566121108 is about 1369.0701965239.

The spelling of 2566121108 in words is "two billion, five hundred sixty-six million, one hundred twenty-one thousand, one hundred eight".