41661631605 has 24 divisors (see below), whose sum is σ = 73269385056. Its totient is φ = 20199578080.

The previous prime is 41661631597. The next prime is 41661631619. The reversal of 41661631605 is 50613616614.

41661631605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 41661631605 - 2³ = 41661631597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11475219 + ... + 11478848.

It is an arithmetic number, because the mean of its divisors is an integer number (3052891044).

Almost surely, 2^41661631605 is an apocalyptic number.

It is an amenable number.

41661631605 is a deficient number, since it is larger than the sum of its proper divisors (31607753451).

41661631605 is a wasteful number, since it uses less digits than its factorization.

41661631605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22954097 (or 22954086 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 41661631605 in words is "forty-one billion, six hundred sixty-one million, six hundred thirty-one thousand, six hundred five".