2120566609 has 8 divisors (see below), whose sum is σ = 2447500608. Its totient is φ = 1799631600.

The previous prime is 2120566583. The next prime is 2120566619. The reversal of 2120566609 is 9066650212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120566609 - 2¹⁵ = 2120533841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120566619) 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 7 ways as a sum of consecutive naturals, for example, 1498987 + ... + 1500400.

It is an arithmetic number, because the mean of its divisors is an integer number (305937576).

Almost surely, 2^2120566609 is an apocalyptic number.

It is an amenable number.

2120566609 is a deficient number, since it is larger than the sum of its proper divisors (326933999).

2120566609 is a wasteful number, since it uses less digits than its factorization.

2120566609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999495.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 2120566609 is about 46049.6103023685. The cubic root of 2120566609 is about 1284.7460946656.

The spelling of 2120566609 in words is "two billion, one hundred twenty million, five hundred sixty-six thousand, six hundred nine".