41643205666623 has 24 divisors (see below), whose sum is σ = 66731793373440. Its totient is φ = 24810538554960.

The previous prime is 41643205666619. The next prime is 41643205666631. The reversal of 41643205666623 is 32666650234614.

It is not a de Polignac number, because 41643205666623 - 2² = 41643205666619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41643205666623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41643205666603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3564726711 + ... + 3564738392.

It is an arithmetic number, because the mean of its divisors is an integer number (2780491390560).

Almost surely, 2^{41643205666623} is an apocalyptic number.

41643205666623 is a deficient number, since it is larger than the sum of its proper divisors (25088587706817).

41643205666623 is a wasteful number, since it uses less digits than its factorization.

41643205666623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7129465179 (or 7129465176 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 54.

The spelling of 41643205666623 in words is "forty-one trillion, six hundred forty-three billion, two hundred five million, six hundred sixty-six thousand, six hundred twenty-three".