1663003545113 has 4 divisors (see below), whose sum is σ = 1685784415668. Its totient is φ = 1640222674560.

The previous prime is 1663003545101. The next prime is 1663003545169. The reversal of 1663003545113 is 3115453003661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 594939170329 + 1068064374784 = 771323^2 + 1033472^2 .

It is a cyclic number.

It is not a de Polignac number, because 1663003545113 - 2²⁰ = 1663002496537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663003548113) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11390435168 + ... + 11390435313.

It is an arithmetic number, because the mean of its divisors is an integer number (421446103917).

Almost surely, 2^{1663003545113} is an apocalyptic number.

It is an amenable number.

1663003545113 is a deficient number, since it is larger than the sum of its proper divisors (22780870555).

1663003545113 is an equidigital number, since it uses as much as digits as its factorization.

1663003545113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22780870554.

The product of its (nonzero) digits is 97200, while the sum is 38.

Adding to 1663003545113 its reverse (3115453003661), we get a palindrome (4778456548774).

The spelling of 1663003545113 in words is "one trillion, six hundred sixty-three billion, three million, five hundred forty-five thousand, one hundred thirteen".