2194311555072 has 1344 divisors, whose sum is σ = 8373606958080. Its totient is φ = 558976204800.

The previous prime is 2194311555031. The next prime is 2194311555091. The reversal of 2194311555072 is 2705551134912.

2194311555072 is a `hidden beast` number, since 2 + 1 + 94 + 3 + 1 + 1 + 5 + 550 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

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 111 ways as a sum of consecutive naturals, for example, 4211730172 + ... + 4211730692.

It is an arithmetic number, because the mean of its divisors is an integer number (6230362320).

Almost surely, 2^{2194311555072} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2194311555072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4186803479040).

2194311555072 is an abundant number, since it is smaller than the sum of its proper divisors (6179295403008).

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

2194311555072 is an equidigital number, since it uses as much as digits as its factorization.

2194311555072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

Adding to 2194311555072 its reverse (2705551134912), we get a palindrome (4899862689984).

The spelling of 2194311555072 in words is "two trillion, one hundred ninety-four billion, three hundred eleven million, five hundred fifty-five thousand, seventy-two".