2663220641605 has 16 divisors (see below), whose sum is σ = 3244562671104. Its totient is φ = 2098130823360.

The previous prime is 2663220641579. The next prime is 2663220641611. The reversal of 2663220641605 is 5061460223662.

2663220641605 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2663220641605 - 2¹³ = 2663220633413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132181 + ... + 2311690.

It is an arithmetic number, because the mean of its divisors is an integer number (202785166944).

Almost surely, 2^{2663220641605} is an apocalyptic number.

It is an amenable number.

2663220641605 is a deficient number, since it is larger than the sum of its proper divisors (581342029499).

2663220641605 is a wasteful number, since it uses less digits than its factorization.

2663220641605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447196.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 2663220641605 in words is "two trillion, six hundred sixty-three billion, two hundred twenty million, six hundred forty-one thousand, six hundred five".