16631340041 has 4 divisors (see below), whose sum is σ = 16652856132. Its totient is φ = 16609823952.

The previous prime is 16631340029. The next prime is 16631340073. The reversal of 16631340041 is 14004313661.

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 3863244025 + 12768096016 = 62155^2 + 112996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16631340041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16631339986 and 16631340013.

It is not an unprimeable number, because it can be changed into a prime (16631340001) 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, 10756886 + ... + 10758431.

It is an arithmetic number, because the mean of its divisors is an integer number (4163214033).

Almost surely, 2^16631340041 is an apocalyptic number.

It is an amenable number.

16631340041 is a deficient number, since it is larger than the sum of its proper divisors (21516091).

16631340041 is an equidigital number, since it uses as much as digits as its factorization.

16631340041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21516090.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 16631340041 in words is "sixteen billion, six hundred thirty-one million, three hundred forty thousand, forty-one".