673445667779 has 8 divisors (see below), whose sum is σ = 675697039248. Its totient is φ = 671194671840.

The previous prime is 673445667761. The next prime is 673445667793. The reversal of 673445667779 is 977766544376.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673445667779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673445667179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3762629 + ... + 3937545.

It is an arithmetic number, because the mean of its divisors is an integer number (84462129906).

Almost surely, 2^673445667779 is an apocalyptic number.

673445667779 is a deficient number, since it is larger than the sum of its proper divisors (2251371469).

673445667779 is a wasteful number, since it uses less digits than its factorization.

673445667779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187765.

The product of its digits is 1120210560, while the sum is 71.

The spelling of 673445667779 in words is "six hundred seventy-three billion, four hundred forty-five million, six hundred sixty-seven thousand, seven hundred seventy-nine".