6419497680917 has 2 divisors, whose sum is σ = 6419497680918. Its totient is φ = 6419497680916.

The previous prime is 6419497680853. The next prime is 6419497680979. The reversal of 6419497680917 is 7190867949146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5686703471761 + 732794209156 = 2384681^2 + 856034^2 .

It is a cyclic number.

It is not a de Polignac number, because 6419497680917 - 2⁶ = 6419497680853 is a prime.

It is a super-2 number, since 2×6419497680917² (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 (6419497680997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3209748840458 + 3209748840459.

It is an arithmetic number, because the mean of its divisors is an integer number (3209748840459).

Almost surely, 2^{6419497680917} is an apocalyptic number.

It is an amenable number.

6419497680917 is a deficient number, since it is larger than the sum of its proper divisors (1).

6419497680917 is an equidigital number, since it uses as much as digits as its factorization.

6419497680917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164602368, while the sum is 71.

The spelling of 6419497680917 in words is "six trillion, four hundred nineteen billion, four hundred ninety-seven million, six hundred eighty thousand, nine hundred seventeen".