1728068515396 has 6 divisors (see below), whose sum is σ = 3024119901950. Its totient is φ = 864034257696.

The previous prime is 1728068515373. The next prime is 1728068515409. The reversal of 1728068515396 is 6935158608271.

It can be written as a sum of positive squares in only one way, i.e., 1533114476100 + 194954039296 = 1238190^2 + 441536^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216008564421 + ... + 216008564428.

Almost surely, 2^{1728068515396} is an apocalyptic number.

It is an amenable number.

1728068515396 is a deficient number, since it is larger than the sum of its proper divisors (1296051386554).

1728068515396 is a wasteful number, since it uses less digits than its factorization.

1728068515396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432017128853 (or 432017128851 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 61.

The spelling of 1728068515396 in words is "one trillion, seven hundred twenty-eight billion, sixty-eight million, five hundred fifteen thousand, three hundred ninety-six".