673509209057 has 8 divisors (see below), whose sum is σ = 687589711200. Its totient is φ = 659517543424.

The previous prime is 673509209029. The next prime is 673509209059. The reversal of 673509209057 is 750902905376.

673509209057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 673509209057 - 2⁶ = 673509208993 is a prime.

It is a super-2 number, since 2×673509209057² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673509209059) 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, 22193807 + ... + 22224132.

It is an arithmetic number, because the mean of its divisors is an integer number (85948713900).

Almost surely, 2^673509209057 is an apocalyptic number.

It is an amenable number.

673509209057 is a deficient number, since it is larger than the sum of its proper divisors (14080502143).

673509209057 is a wasteful number, since it uses less digits than its factorization.

673509209057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44418255.

The product of its (nonzero) digits is 3572100, while the sum is 53.

The spelling of 673509209057 in words is "six hundred seventy-three billion, five hundred nine million, two hundred nine thousand, fifty-seven".