671622216323 has 2 divisors, whose sum is σ = 671622216324. Its totient is φ = 671622216322.

The previous prime is 671622216299. The next prime is 671622216371. The reversal of 671622216323 is 323612226176.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671622216323 - 2⁶ = 671622216259 is a prime.

It is not a weakly prime, because it can be changed into another prime (671622216523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335811108161 + 335811108162.

It is an arithmetic number, because the mean of its divisors is an integer number (335811108162).

Almost surely, 2^671622216323 is an apocalyptic number.

671622216323 is a deficient number, since it is larger than the sum of its proper divisors (1).

671622216323 is an equidigital number, since it uses as much as digits as its factorization.

671622216323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 41.

The spelling of 671622216323 in words is "six hundred seventy-one billion, six hundred twenty-two million, two hundred sixteen thousand, three hundred twenty-three".