6217309656343 has 2 divisors, whose sum is σ = 6217309656344. Its totient is φ = 6217309656342.

The previous prime is 6217309656241. The next prime is 6217309656391. The reversal of 6217309656343 is 3436569037126.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6217309656343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6217309656043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3108654828171 + 3108654828172.

It is an arithmetic number, because the mean of its divisors is an integer number (3108654828172).

Almost surely, 2^{6217309656343} is an apocalyptic number.

6217309656343 is a deficient number, since it is larger than the sum of its proper divisors (1).

6217309656343 is an equidigital number, since it uses as much as digits as its factorization.

6217309656343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14696640, while the sum is 55.

The spelling of 6217309656343 in words is "six trillion, two hundred seventeen billion, three hundred nine million, six hundred fifty-six thousand, three hundred forty-three".