2194355780343 has 24 divisors (see below), whose sum is σ = 3287578087248. Its totient is φ = 1462654822464.

The previous prime is 2194355780293. The next prime is 2194355780347. The reversal of 2194355780343 is 3430875534912.

2194355780343 is a `hidden beast` number, since 2 + 1 + 9 + 4 + 3 + 557 + 80 + 3 + 4 + 3 = 666.

It is not a de Polignac number, because 2194355780343 - 2²² = 2194351586039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2194355780343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194355780347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 667305 + ... + 2198637.

It is an arithmetic number, because the mean of its divisors is an integer number (136982420302).

Almost surely, 2^{2194355780343} is an apocalyptic number.

2194355780343 is a deficient number, since it is larger than the sum of its proper divisors (1093222306905).

2194355780343 is an equidigital number, since it uses as much as digits as its factorization.

2194355780343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537245 (or 1537233 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 2194355780343 in words is "two trillion, one hundred ninety-four billion, three hundred fifty-five million, seven hundred eighty thousand, three hundred forty-three".