16445040011 has 4 divisors (see below), whose sum is σ = 16445522832. Its totient is φ = 16444557192.

The previous prime is 16445039993. The next prime is 16445040019. The reversal of 16445040011 is 11004054461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16445040011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16445040019) 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, 186095 + ... + 259848.

It is an arithmetic number, because the mean of its divisors is an integer number (4111380708).

Almost surely, 2^16445040011 is an apocalyptic number.

16445040011 is a deficient number, since it is larger than the sum of its proper divisors (482821).

16445040011 is an equidigital number, since it uses as much as digits as its factorization.

16445040011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482820.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 16445040011 its reverse (11004054461), we get a palindrome (27449094472).

The spelling of 16445040011 in words is "sixteen billion, four hundred forty-five million, forty thousand, eleven".