664581416363 has 2 divisors, whose sum is σ = 664581416364. Its totient is φ = 664581416362.

The previous prime is 664581416351. The next prime is 664581416419. The reversal of 664581416363 is 363614185466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 664581416363 - 2²² = 664577222059 is a prime.

It is not a weakly prime, because it can be changed into another prime (664581416333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332290708181 + 332290708182.

It is an arithmetic number, because the mean of its divisors is an integer number (332290708182).

Almost surely, 2^664581416363 is an apocalyptic number.

664581416363 is a deficient number, since it is larger than the sum of its proper divisors (1).

664581416363 is an equidigital number, since it uses as much as digits as its factorization.

664581416363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 53.

The spelling of 664581416363 in words is "six hundred sixty-four billion, five hundred eighty-one million, four hundred sixteen thousand, three hundred sixty-three".