6418353656893 has 2 divisors, whose sum is σ = 6418353656894. Its totient is φ = 6418353656892.

The previous prime is 6418353656801. The next prime is 6418353656903. The reversal of 6418353656893 is 3986563538146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5339158878244 + 1079194778649 = 2310662^2 + 1038843^2 .

It is a cyclic number.

It is not a de Polignac number, because 6418353656893 - 2¹³ = 6418353648701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6418353656093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3209176828446 + 3209176828447.

It is an arithmetic number, because the mean of its divisors is an integer number (3209176828447).

Almost surely, 2^{6418353656893} is an apocalyptic number.

It is an amenable number.

6418353656893 is a deficient number, since it is larger than the sum of its proper divisors (1).

6418353656893 is an equidigital number, since it uses as much as digits as its factorization.

6418353656893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 335923200, while the sum is 67.

The spelling of 6418353656893 in words is "six trillion, four hundred eighteen billion, three hundred fifty-three million, six hundred fifty-six thousand, eight hundred ninety-three".