544400540243 has 24 divisors (see below), whose sum is σ = 636795214704. Its totient is φ = 464042779200.

The previous prime is 544400540149. The next prime is 544400540251. The reversal of 544400540243 is 342045004445.

It is not a de Polignac number, because 544400540243 - 2²⁸ = 544132104787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (544400540443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22585628 + ... + 22609718.

It is an arithmetic number, because the mean of its divisors is an integer number (26533133946).

Almost surely, 2^544400540243 is an apocalyptic number.

544400540243 is a deficient number, since it is larger than the sum of its proper divisors (92394674461).

544400540243 is a wasteful number, since it uses less digits than its factorization.

544400540243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26643 (or 26636 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 35.

Adding to 544400540243 its reverse (342045004445), we get a palindrome (886445544688).

The spelling of 544400540243 in words is "five hundred forty-four billion, four hundred million, five hundred forty thousand, two hundred forty-three".