544150040521 has 4 divisors (see below), whose sum is σ = 576158866452. Its totient is φ = 512141214592.

The previous prime is 544150040513. The next prime is 544150040549. The reversal of 544150040521 is 125040051445.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 409134212496 + 135015828025 = 639636^2 + 367445^2 .

It is a cyclic number.

It is not a de Polignac number, because 544150040521 - 2³ = 544150040513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (544150040501) 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, 16004412940 + ... + 16004412973.

It is an arithmetic number, because the mean of its divisors is an integer number (144039716613).

Almost surely, 2^544150040521 is an apocalyptic number.

It is an amenable number.

544150040521 is a deficient number, since it is larger than the sum of its proper divisors (32008825931).

544150040521 is a wasteful number, since it uses less digits than its factorization.

544150040521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32008825930.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 544150040521 its reverse (125040051445), we get a palindrome (669190091966).

The spelling of 544150040521 in words is "five hundred forty-four billion, one hundred fifty million, forty thousand, five hundred twenty-one".