6411478423349 has 2 divisors, whose sum is σ = 6411478423350. Its totient is φ = 6411478423348.

The previous prime is 6411478423307. The next prime is 6411478423381. The reversal of 6411478423349 is 9433248741146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5692471092100 + 719007331249 = 2385890^2 + 847943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6411478423349 is a prime.

It is a super-2 number, since 2×6411478423349² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6411478423294 and 6411478423303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6411478423249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3205739211674 + 3205739211675.

It is an arithmetic number, because the mean of its divisors is an integer number (3205739211675).

Almost surely, 2^{6411478423349} is an apocalyptic number.

It is an amenable number.

6411478423349 is a deficient number, since it is larger than the sum of its proper divisors (1).

6411478423349 is an equidigital number, since it uses as much as digits as its factorization.

6411478423349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13934592, while the sum is 56.

The spelling of 6411478423349 in words is "six trillion, four hundred eleven billion, four hundred seventy-eight million, four hundred twenty-three thousand, three hundred forty-nine".