1728068515397 has 32 divisors (see below), whose sum is σ = 2114944473600. Its totient is φ = 1378186242048.

The previous prime is 1728068515373. The next prime is 1728068515409. The reversal of 1728068515397 is 7935158608271.

It is not a de Polignac number, because 1728068515397 - 2¹⁰ = 1728068514373 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728068517397) 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, 106314923 + ... + 106331175.

It is an arithmetic number, because the mean of its divisors is an integer number (66092014800).

Almost surely, 2^{1728068515397} is an apocalyptic number.

1728068515397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1728068515397 is a deficient number, since it is larger than the sum of its proper divisors (386875958203).

1728068515397 is a wasteful number, since it uses less digits than its factorization.

1728068515397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26405.

The product of its (nonzero) digits is 25401600, while the sum is 62.

The spelling of 1728068515397 in words is "one trillion, seven hundred twenty-eight billion, sixty-eight million, five hundred fifteen thousand, three hundred ninety-seven".