2166653040005 has 4 divisors (see below), whose sum is σ = 2599983648012. Its totient is φ = 1733322432000.

The previous prime is 2166653039983. The next prime is 2166653040011. The reversal of 2166653040005 is 5000403566612.

It is a happy number.

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 260425481761 + 1906227558244 = 510319^2 + 1380662^2 .

It is not a de Polignac number, because 2166653040005 - 2¹⁰ = 2166653038981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216665303996 + ... + 216665304005.

It is an arithmetic number, because the mean of its divisors is an integer number (649995912003).

Almost surely, 2^{2166653040005} is an apocalyptic number.

It is an amenable number.

2166653040005 is a deficient number, since it is larger than the sum of its proper divisors (433330608007).

2166653040005 is an equidigital number, since it uses as much as digits as its factorization.

2166653040005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433330608006.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 2166653040005 in words is "two trillion, one hundred sixty-six billion, six hundred fifty-three million, forty thousand, five".