2256142403543 has 4 divisors (see below), whose sum is σ = 2578448461200. Its totient is φ = 1933836345888.

The previous prime is 2256142403533. The next prime is 2256142403573. The reversal of 2256142403543 is 3453042416522.

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

It is a cyclic number.

It is not a de Polignac number, because 2256142403543 - 2¹⁰ = 2256142402519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2256142403543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256142403533) 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 3 ways as a sum of consecutive naturals, for example, 161153028818 + ... + 161153028831.

It is an arithmetic number, because the mean of its divisors is an integer number (644612115300).

Almost surely, 2^{2256142403543} is an apocalyptic number.

2256142403543 is a deficient number, since it is larger than the sum of its proper divisors (322306057657).

2256142403543 is an equidigital number, since it uses as much as digits as its factorization.

2256142403543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322306057656.

The product of its (nonzero) digits is 691200, while the sum is 41.

The spelling of 2256142403543 in words is "two trillion, two hundred fifty-six billion, one hundred forty-two million, four hundred three thousand, five hundred forty-three".