6620256956196 has 81 divisors (see below), whose sum is σ = 18121380889521. Its totient is φ = 2036940388704.

The previous prime is 6620256956177. The next prime is 6620256956237. The reversal of 6620256956196 is 6916596520266.

The square root of 6620256956196 is 2572986.

It is a perfect power (a square), and thus also a powerful number.

6620256956196 is a `hidden beast` number, since 6 + 6 + 2 + 0 + 2 + 5 + 6 + 9 + 5 + 619 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 979327952100 + 5640929004096 = 989610^2 + 2375064^2 .

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 26 ways as a sum of consecutive naturals, for example, 200676415 + ... + 200709401.

Almost surely, 2^{6620256956196} is an apocalyptic number.

6620256956196 is the 2572986-th square number.

It is an amenable number.

6620256956196 is an abundant number, since it is smaller than the sum of its proper divisors (11501123933325).

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

6620256956196 is an equidigital number, since it uses as much as digits as its factorization.

6620256956196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66010 (or 33005 counting only the distinct ones).

The product of its (nonzero) digits is 62985600, while the sum is 63.

The spelling of 6620256956196 in words is "six trillion, six hundred twenty billion, two hundred fifty-six million, nine hundred fifty-six thousand, one hundred ninety-six".