1728408833066 has 16 divisors (see below), whose sum is σ = 2600036006568. Its totient is φ = 861731006400.

The previous prime is 1728408833033. The next prime is 1728408833153. The reversal of 1728408833066 is 6603388048271.

It can be written as a sum of positive squares in 4 ways, for example, as 774084992041 + 954323841025 = 879821^2 + 976895^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 3955856 + ... + 4370996.

Almost surely, 2^{1728408833066} is an apocalyptic number.

1728408833066 is a deficient number, since it is larger than the sum of its proper divisors (871627173502).

1728408833066 is a wasteful number, since it uses less digits than its factorization.

1728408833066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421097.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 1728408833066 in words is "one trillion, seven hundred twenty-eight billion, four hundred eight million, eight hundred thirty-three thousand, sixty-six".