2185082043773 has 4 divisors (see below), whose sum is σ = 2313616281660. Its totient is φ = 2056547805888.

The previous prime is 2185082043707. The next prime is 2185082043799. The reversal of 2185082043773 is 3773402805812.

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 670503858649 + 1514578185124 = 818843^2 + 1230682^2 .

It is a cyclic number.

It is not a de Polignac number, because 2185082043773 - 2¹² = 2185082039677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185082043073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64267118918 + ... + 64267118951.

It is an arithmetic number, because the mean of its divisors is an integer number (578404070415).

Almost surely, 2^{2185082043773} is an apocalyptic number.

It is an amenable number.

2185082043773 is a deficient number, since it is larger than the sum of its proper divisors (128534237887).

2185082043773 is a wasteful number, since it uses less digits than its factorization.

2185082043773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128534237886.

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 2185082043773 in words is "two trillion, one hundred eighty-five billion, eighty-two million, forty-three thousand, seven hundred seventy-three".