2204215451178 has 128 divisors (see below), whose sum is σ = 4876913276928. Its totient is φ = 659867330304.

The previous prime is 2204215451171. The next prime is 2204215451197. The reversal of 2204215451178 is 8711545124022.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2204215451171) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 1802301475 + ... + 1802302697.

It is an arithmetic number, because the mean of its divisors is an integer number (38100884976).

Almost surely, 2^{2204215451178} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2204215451178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2438456638464).

2204215451178 is an abundant number, since it is smaller than the sum of its proper divisors (2672697825750).

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

2204215451178 is a wasteful number, since it uses less digits than its factorization.

2204215451178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940.

The product of its (nonzero) digits is 179200, while the sum is 42.

The spelling of 2204215451178 in words is "two trillion, two hundred four billion, two hundred fifteen million, four hundred fifty-one thousand, one hundred seventy-eight".