41561644011 has 4 divisors (see below), whose sum is σ = 55415525352. Its totient is φ = 27707762672.

The previous prime is 41561644009. The next prime is 41561644051. The reversal of 41561644011 is 11044616514.

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

It is a cyclic number.

It is not a de Polignac number, because 41561644011 - 2¹ = 41561644009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (41561644001) 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, 6926940666 + ... + 6926940671.

It is an arithmetic number, because the mean of its divisors is an integer number (13853881338).

Almost surely, 2^41561644011 is an apocalyptic number.

41561644011 is a deficient number, since it is larger than the sum of its proper divisors (13853881341).

41561644011 is a wasteful number, since it uses less digits than its factorization.

41561644011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13853881340.

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 41561644011 in words is "forty-one billion, five hundred sixty-one million, six hundred forty-four thousand, eleven".