673389544507 has 2 divisors, whose sum is σ = 673389544508. Its totient is φ = 673389544506.

The previous prime is 673389544493. The next prime is 673389544571. The reversal of 673389544507 is 705445983376.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673389544507 - 2¹⁹ = 673389020219 is a prime.

It is not a weakly prime, because it can be changed into another prime (673389514507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336694772253 + 336694772254.

It is an arithmetic number, because the mean of its divisors is an integer number (336694772254).

Almost surely, 2^673389544507 is an apocalyptic number.

673389544507 is a deficient number, since it is larger than the sum of its proper divisors (1).

673389544507 is an equidigital number, since it uses as much as digits as its factorization.

673389544507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76204800, while the sum is 61.

The spelling of 673389544507 in words is "six hundred seventy-three billion, three hundred eighty-nine million, five hundred forty-four thousand, five hundred seven".