254344145543 has 4 divisors (see below), whose sum is σ = 254420551440. Its totient is φ = 254267739648.

The previous prime is 254344145509. The next prime is 254344145551. The reversal of 254344145543 is 345541443452.

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 254344145543 - 2⁶ = 254344145479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 254344145494 and 254344145503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254344145843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38197955 + ... + 38204612.

It is an arithmetic number, because the mean of its divisors is an integer number (63605137860).

Almost surely, 2^254344145543 is an apocalyptic number.

254344145543 is a deficient number, since it is larger than the sum of its proper divisors (76405897).

254344145543 is an equidigital number, since it uses as much as digits as its factorization.

254344145543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76405896.

The product of its digits is 2304000, while the sum is 44.

Adding to 254344145543 its reverse (345541443452), we get a palindrome (599885588995).

The spelling of 254344145543 in words is "two hundred fifty-four billion, three hundred forty-four million, one hundred forty-five thousand, five hundred forty-three".