11003545643 has 4 divisors (see below), whose sum is σ = 11003764200. Its totient is φ = 11003327088.

The previous prime is 11003545633. The next prime is 11003545649. The reversal of 11003545643 is 34654530011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34654530011 = 463 ⋅74847797.

It is a cyclic number.

It is not a de Polignac number, because 11003545643 - 2¹⁰ = 11003544619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11003545649) 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, 8696 + ... + 148602.

It is an arithmetic number, because the mean of its divisors is an integer number (2750941050).

Almost surely, 2^11003545643 is an apocalyptic number.

11003545643 is a deficient number, since it is larger than the sum of its proper divisors (218557).

11003545643 is an equidigital number, since it uses as much as digits as its factorization.

11003545643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218556.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 11003545643 in words is "eleven billion, three million, five hundred forty-five thousand, six hundred forty-three".