1665001650016 has 24 divisors (see below), whose sum is σ = 3339820530144. Its totient is φ = 816793261440.

The previous prime is 1665001649999. The next prime is 1665001650017. The reversal of 1665001650016 is 6100561005661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665001650017) 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, 490859640 + ... + 490863031.

It is an arithmetic number, because the mean of its divisors is an integer number (139159188756).

Almost surely, 2^{1665001650016} is an apocalyptic number.

1665001650016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1665001650016 is an abundant number, since it is smaller than the sum of its proper divisors (1674818880128).

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

1665001650016 is an equidigital number, since it uses as much as digits as its factorization.

1665001650016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981722734 (or 981722726 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

Adding to 1665001650016 its reverse (6100561005661), we get a palindrome (7765562655677).

The spelling of 1665001650016 in words is "one trillion, six hundred sixty-five billion, one million, six hundred fifty thousand, sixteen".