2544440240423 has 16 divisors (see below), whose sum is σ = 2784509892864. Its totient is φ = 2314608545280.

The previous prime is 2544440240399. The next prime is 2544440240431. The reversal of 2544440240423 is 3240420444452.

It is not a de Polignac number, because 2544440240423 - 2¹⁸ = 2544439978279 is a prime.

It is a super-2 number, since 2×2544440240423² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544440240453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2608940 + ... + 3448977.

It is an arithmetic number, because the mean of its divisors is an integer number (174031868304).

Almost surely, 2^{2544440240423} is an apocalyptic number.

2544440240423 is a deficient number, since it is larger than the sum of its proper divisors (240069652441).

2544440240423 is a wasteful number, since it uses less digits than its factorization.

2544440240423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6058762.

The product of its (nonzero) digits is 491520, while the sum is 38.

Adding to 2544440240423 its reverse (3240420444452), we get a palindrome (5784860684875).

The spelling of 2544440240423 in words is "two trillion, five hundred forty-four billion, four hundred forty million, two hundred forty thousand, four hundred twenty-three".