200454144101243 has 4 divisors (see below), whose sum is σ = 201683924126568. Its totient is φ = 199224364075920.

The previous prime is 200454144101117. The next prime is 200454144101251. The reversal of 200454144101243 is 342101441454002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200454144101243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200454144101293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614890012418 + ... + 614890012743.

It is an arithmetic number, because the mean of its divisors is an integer number (50420981031642).

Almost surely, 2^{200454144101243} is an apocalyptic number.

200454144101243 is a deficient number, since it is larger than the sum of its proper divisors (1229780025325).

200454144101243 is a wasteful number, since it uses less digits than its factorization.

200454144101243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229780025324.

The product of its (nonzero) digits is 61440, while the sum is 35.

Adding to 200454144101243 its reverse (342101441454002), we get a palindrome (542555585555245).

The spelling of 200454144101243 in words is "two hundred trillion, four hundred fifty-four billion, one hundred forty-four million, one hundred one thousand, two hundred forty-three".