1728017657268 has 96 divisors (see below), whose sum is σ = 4633016602368. Its totient is φ = 491049216000.

The previous prime is 1728017657221. The next prime is 1728017657287. The reversal of 1728017657268 is 8627567108271.

It is a super-2 number, since 2×1728017657268² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16080918 + ... + 16188018.

It is an arithmetic number, because the mean of its divisors is an integer number (48260589608).

Almost surely, 2^{1728017657268} is an apocalyptic number.

It is an amenable number.

1728017657268 is an abundant number, since it is smaller than the sum of its proper divisors (2904998945100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1728017657268 is a wasteful number, since it uses less digits than its factorization.

1728017657268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108153 (or 108151 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 60.

The spelling of 1728017657268 in words is "one trillion, seven hundred twenty-eight billion, seventeen million, six hundred fifty-seven thousand, two hundred sixty-eight".