6720553903207 has 2 divisors, whose sum is σ = 6720553903208. Its totient is φ = 6720553903206.

The previous prime is 6720553903169. The next prime is 6720553903291. The reversal of 6720553903207 is 7023093550276.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6720553903207 - 2¹⁹ = 6720553378919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6720553903507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3360276951603 + 3360276951604.

It is an arithmetic number, because the mean of its divisors is an integer number (3360276951604).

Almost surely, 2^{6720553903207} is an apocalyptic number.

6720553903207 is a deficient number, since it is larger than the sum of its proper divisors (1).

6720553903207 is an equidigital number, since it uses as much as digits as its factorization.

6720553903207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2381400, while the sum is 49.

The spelling of 6720553903207 in words is "six trillion, seven hundred twenty billion, five hundred fifty-three million, nine hundred three thousand, two hundred seven".