673509209013 has 32 divisors (see below), whose sum is σ = 1003904000000. Its totient is φ = 446260429296.

The previous prime is 673509209011. The next prime is 673509209029. The reversal of 673509209013 is 310902905376.

It is not a de Polignac number, because 673509209013 - 2¹ = 673509209011 is a prime.

It is a super-2 number, since 2×673509209013² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 673509209013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673509209011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4869588 + ... + 5005986.

It is an arithmetic number, because the mean of its divisors is an integer number (31372000000).

Almost surely, 2^673509209013 is an apocalyptic number.

It is an amenable number.

673509209013 is a deficient number, since it is larger than the sum of its proper divisors (330394790987).

673509209013 is a wasteful number, since it uses less digits than its factorization.

673509209013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137526 (or 137520 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The spelling of 673509209013 in words is "six hundred seventy-three billion, five hundred nine million, two hundred nine thousand, thirteen".