2163606665604 has 96 divisors (see below), whose sum is σ = 5144332032000. Its totient is φ = 707629493376.

The previous prime is 2163606665573. The next prime is 2163606665611. The reversal of 2163606665604 is 4065666063612.

It is a super-3 number, since 3×2163606665604³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147790117 + ... + 147804755.

It is an arithmetic number, because the mean of its divisors is an integer number (53586792000).

Almost surely, 2^{2163606665604} is an apocalyptic number.

It is an amenable number.

2163606665604 is an abundant number, since it is smaller than the sum of its proper divisors (2980725366396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2163606665604 is a wasteful number, since it uses less digits than its factorization.

2163606665604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15737 (or 15735 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 51.

The spelling of 2163606665604 in words is "two trillion, one hundred sixty-three billion, six hundred six million, six hundred sixty-five thousand, six hundred four".