1728068515405 has 8 divisors (see below), whose sum is σ = 2182823388000. Its totient is φ = 1309694032656.

The previous prime is 1728068515373. The next prime is 1728068515409. The reversal of 1728068515405 is 5045158608271.

It is a happy number.

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 1728068515405 - 2⁵ = 1728068515373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728068515409) 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, 9095097355 + ... + 9095097544.

It is an arithmetic number, because the mean of its divisors is an integer number (272852923500).

Almost surely, 2^{1728068515405} is an apocalyptic number.

It is an amenable number.

1728068515405 is a deficient number, since it is larger than the sum of its proper divisors (454754872595).

1728068515405 is a wasteful number, since it uses less digits than its factorization.

1728068515405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18190194923.

The product of its (nonzero) digits is 2688000, while the sum is 52.

The spelling of 1728068515405 in words is "one trillion, seven hundred twenty-eight billion, sixty-eight million, five hundred fifteen thousand, four hundred five".