6468720894677 has 2 divisors, whose sum is σ = 6468720894678. Its totient is φ = 6468720894676.

The previous prime is 6468720894641. The next prime is 6468720894707. The reversal of 6468720894677 is 7764980278646.

6468720894677 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5525198129476 + 943522765201 = 2350574^2 + 971351^2 .

It is a cyclic number.

It is not a de Polignac number, because 6468720894677 - 2⁸ = 6468720894421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6468720894877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3234360447338 + 3234360447339.

It is an arithmetic number, because the mean of its divisors is an integer number (3234360447339).

Almost surely, 2^{6468720894677} is an apocalyptic number.

It is an amenable number.

6468720894677 is a deficient number, since it is larger than the sum of its proper divisors (1).

6468720894677 is an equidigital number, since it uses as much as digits as its factorization.

6468720894677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1365590016, while the sum is 74.

The spelling of 6468720894677 in words is "six trillion, four hundred sixty-eight billion, seven hundred twenty million, eight hundred ninety-four thousand, six hundred seventy-seven".