41605216613 has 4 divisors (see below), whose sum is σ = 41633159820. Its totient is φ = 41577273408.

The previous prime is 41605216559. The next prime is 41605216619. The reversal of 41605216613 is 31661250614.

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 25644179044 + 15961037569 = 160138^2 + 126337^2 .

It is a cyclic number.

It is not a de Polignac number, because 41605216613 - 2²⁴ = 41588439397 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 (41605216619) 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, 13969370 + ... + 13972347.

It is an arithmetic number, because the mean of its divisors is an integer number (10408289955).

Almost surely, 2^41605216613 is an apocalyptic number.

It is an amenable number.

41605216613 is a deficient number, since it is larger than the sum of its proper divisors (27943207).

41605216613 is a wasteful number, since it uses less digits than its factorization.

41605216613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27943206.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 41605216613 in words is "forty-one billion, six hundred five million, two hundred sixteen thousand, six hundred thirteen".