1659498325680 has 320 divisors, whose sum is σ = 5643638784000. Its totient is φ = 403310988288.

The previous prime is 1659498325657. The next prime is 1659498325711. The reversal of 1659498325680 is 865238949561.

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 63 ways as a sum of consecutive naturals, for example, 41635201 + ... + 41675039.

It is an arithmetic number, because the mean of its divisors is an integer number (17636371200).

Almost surely, 2^{1659498325680} is an apocalyptic number.

1659498325680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1659498325680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2821819392000).

1659498325680 is an abundant number, since it is smaller than the sum of its proper divisors (3984140458320).

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

1659498325680 is a wasteful number, since it uses less digits than its factorization.

1659498325680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39973 (or 39941 counting only the distinct ones).

The product of its (nonzero) digits is 111974400, while the sum is 66.

The spelling of 1659498325680 in words is "one trillion, six hundred fifty-nine billion, four hundred ninety-eight million, three hundred twenty-five thousand, six hundred eighty".