2120056663 has 4 divisors (see below), whose sum is σ = 2149916688. Its totient is φ = 2090196640.

The previous prime is 2120056661. The next prime is 2120056667. The reversal of 2120056663 is 3666500212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2120056663 - 2¹ = 2120056661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120056661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14929906 + ... + 14930047.

It is an arithmetic number, because the mean of its divisors is an integer number (537479172).

Almost surely, 2^2120056663 is an apocalyptic number.

2120056663 is a deficient number, since it is larger than the sum of its proper divisors (29860025).

2120056663 is an equidigital number, since it uses as much as digits as its factorization.

2120056663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29860024.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 2120056663 is about 46044.0730496337. The cubic root of 2120056663 is about 1284.6431027494.

Adding to 2120056663 its reverse (3666500212), we get a palindrome (5786556875).

The spelling of 2120056663 in words is "two billion, one hundred twenty million, fifty-six thousand, six hundred sixty-three".