1728068515456 has 32 divisors (see below), whose sum is σ = 3442757774400. Its totient is φ = 864003819264.

The previous prime is 1728068515421. The next prime is 1728068515457. The reversal of 1728068515456 is 6545158608271.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1728068515456² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1728068515456.

It is not an unprimeable number, because it can be changed into a prime (1728068515457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3658191 + ... + 4103473.

It is an arithmetic number, because the mean of its divisors is an integer number (107586180450).

Almost surely, 2^{1728068515456} is an apocalyptic number.

1728068515456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1728068515456 is a deficient number, since it is larger than the sum of its proper divisors (1714689258944).

1728068515456 is an equidigital number, since it uses as much as digits as its factorization.

1728068515456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475616 (or 475604 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 58.

The spelling of 1728068515456 in words is "one trillion, seven hundred twenty-eight billion, sixty-eight million, five hundred fifteen thousand, four hundred fifty-six".