544140505531 has 4 divisors (see below), whose sum is σ = 621874863472. Its totient is φ = 466406147592.

The previous prime is 544140505477. The next prime is 544140505543. The reversal of 544140505531 is 135505041445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135505041445 = 5 ⋅27101008289.

It is not a de Polignac number, because 544140505531 - 2²⁹ = 543603634619 is a prime.

It is a super-2 number, since 2×544140505531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (544140505591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38867178960 + ... + 38867178973.

It is an arithmetic number, because the mean of its divisors is an integer number (155468715868).

Almost surely, 2^544140505531 is an apocalyptic number.

544140505531 is a deficient number, since it is larger than the sum of its proper divisors (77734357941).

544140505531 is an equidigital number, since it uses as much as digits as its factorization.

544140505531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77734357940.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 544140505531 its reverse (135505041445), we get a palindrome (679645546976).

The spelling of 544140505531 in words is "five hundred forty-four billion, one hundred forty million, five hundred five thousand, five hundred thirty-one".