6720437846719 has 2 divisors, whose sum is σ = 6720437846720. Its totient is φ = 6720437846718.

The previous prime is 6720437846659. The next prime is 6720437846761. The reversal of 6720437846719 is 9176487340276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6720437846719 - 2¹⁷ = 6720437715647 is a prime.

It is a super-2 number, since 2×6720437846719² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6720437846119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3360218923359 + 3360218923360.

It is an arithmetic number, because the mean of its divisors is an integer number (3360218923360).

Almost surely, 2^{6720437846719} is an apocalyptic number.

6720437846719 is a deficient number, since it is larger than the sum of its proper divisors (1).

6720437846719 is an equidigital number, since it uses as much as digits as its factorization.

6720437846719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85349376, while the sum is 64.

The spelling of 6720437846719 in words is "six trillion, seven hundred twenty billion, four hundred thirty-seven million, eight hundred forty-six thousand, seven hundred nineteen".