2182450817873 has 4 divisors (see below), whose sum is σ = 2235681325668. Its totient is φ = 2129220310080.

The previous prime is 2182450817867. The next prime is 2182450817881. The reversal of 2182450817873 is 3787180542812.

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 1286518525504 + 895932292369 = 1134248^2 + 946537^2 .

It is a cyclic number.

It is not a de Polignac number, because 2182450817873 - 2³⁴ = 2165270948689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2182450810873) 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, 26615253836 + ... + 26615253917.

It is an arithmetic number, because the mean of its divisors is an integer number (558920331417).

Almost surely, 2^{2182450817873} is an apocalyptic number.

It is an amenable number.

2182450817873 is a deficient number, since it is larger than the sum of its proper divisors (53230507795).

2182450817873 is an equidigital number, since it uses as much as digits as its factorization.

2182450817873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53230507794.

The product of its (nonzero) digits is 6021120, while the sum is 56.

The spelling of 2182450817873 in words is "two trillion, one hundred eighty-two billion, four hundred fifty million, eight hundred seventeen thousand, eight hundred seventy-three".