1665003349536 has 96 divisors (see below), whose sum is σ = 4489727211648. Its totient is φ = 539884615680.

The previous prime is 1665003349501. The next prime is 1665003349543. The reversal of 1665003349536 is 6359433005661.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17253676 + ... + 17349908.

It is an arithmetic number, because the mean of its divisors is an integer number (46767991788).

Almost surely, 2^{1665003349536} is an apocalyptic number.

1665003349536 is a gapful number since it is divisible by the number (16) 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 1665003349536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2244863605824).

1665003349536 is an abundant number, since it is smaller than the sum of its proper divisors (2824723862112).

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

1665003349536 is a wasteful number, since it uses less digits than its factorization.

1665003349536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101154 (or 101146 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 51.

The spelling of 1665003349536 in words is "one trillion, six hundred sixty-five billion, three million, three hundred forty-nine thousand, five hundred thirty-six".