5540044165321 has 4 divisors (see below), whose sum is σ = 5831625437200. Its totient is φ = 5248462893444.

The previous prime is 5540044165309. The next prime is 5540044165349. The reversal of 5540044165321 is 1235614400455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5540044165321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5540044165301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145790635911 + ... + 145790635948.

It is an arithmetic number, because the mean of its divisors is an integer number (1457906359300).

Almost surely, 2^{5540044165321} is an apocalyptic number.

It is an amenable number.

5540044165321 is a deficient number, since it is larger than the sum of its proper divisors (291581271879).

5540044165321 is a wasteful number, since it uses less digits than its factorization.

5540044165321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291581271878.

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 5540044165321 its reverse (1235614400455), we get a palindrome (6775658565776).

The spelling of 5540044165321 in words is "five trillion, five hundred forty billion, forty-four million, one hundred sixty-five thousand, three hundred twenty-one".