671622214493 has 2 divisors, whose sum is σ = 671622214494. Its totient is φ = 671622214492.

The previous prime is 671622214477. The next prime is 671622214507. The reversal of 671622214493 is 394412226176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 653766039364 + 17856175129 = 808558^2 + 133627^2 .

It is a cyclic number.

It is not a de Polignac number, because 671622214493 - 2⁴ = 671622214477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671622214433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335811107246 + 335811107247.

It is an arithmetic number, because the mean of its divisors is an integer number (335811107247).

Almost surely, 2^671622214493 is an apocalyptic number.

It is an amenable number.

671622214493 is a deficient number, since it is larger than the sum of its proper divisors (1).

671622214493 is an equidigital number, since it uses as much as digits as its factorization.

671622214493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 47.

The spelling of 671622214493 in words is "six hundred seventy-one billion, six hundred twenty-two million, two hundred fourteen thousand, four hundred ninety-three".