10043561663 has 4 divisors (see below), whose sum is σ = 10065539280. Its totient is φ = 10021584048.

The previous prime is 10043561609. The next prime is 10043561687. The reversal of 10043561663 is 36616534001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36616534001 = 71 ⋅515725831.

It is a cyclic number.

It is not a de Polignac number, because 10043561663 - 2²⁶ = 9976452799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10043561963) 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, 10988123 + ... + 10989036.

It is an arithmetic number, because the mean of its divisors is an integer number (2516384820).

Almost surely, 2^10043561663 is an apocalyptic number.

10043561663 is a deficient number, since it is larger than the sum of its proper divisors (21977617).

10043561663 is an equidigital number, since it uses as much as digits as its factorization.

10043561663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21977616.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 10043561663 in words is "ten billion, forty-three million, five hundred sixty-one thousand, six hundred sixty-three".