2120056664 has 32 divisors (see below), whose sum is σ = 4338271440. Its totient is φ = 963264000.

The previous prime is 2120056661. The next prime is 2120056667. The reversal of 2120056664 is 4666500212.

It is an interprime number because it is at equal distance from previous prime (2120056661) and next prime (2120056667).

It is a self number, because there is not a number n which added to its sum of digits gives 2120056664.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362564 + ... + 368364.

Almost surely, 2^2120056664 is an apocalyptic number.

It is an amenable number.

2120056664 is an abundant number, since it is smaller than the sum of its proper divisors (2218214776).

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

2120056664 is a wasteful number, since it uses less digits than its factorization.

2120056664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9971 (or 9967 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 2120056664 is about 46044.0730604928. The cubic root of 2120056664 is about 1284.6431029514.

Adding to 2120056664 its reverse (4666500212), we get a palindrome (6786556876).

The spelling of 2120056664 in words is "two billion, one hundred twenty million, fifty-six thousand, six hundred sixty-four".