44042212013 has 4 divisors (see below), whose sum is σ = 45116412348. Its totient is φ = 42968011680.

The previous prime is 44042212007. The next prime is 44042212037. The reversal of 44042212013 is 31021224044.

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 16319296009 + 27722916004 = 127747^2 + 166502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44042212013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 44042212013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44042212003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537100106 + ... + 537100187.

It is an arithmetic number, because the mean of its divisors is an integer number (11279103087).

Almost surely, 2^44042212013 is an apocalyptic number.

It is an amenable number.

44042212013 is a deficient number, since it is larger than the sum of its proper divisors (1074200335).

44042212013 is a wasteful number, since it uses less digits than its factorization.

44042212013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074200334.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 44042212013 its reverse (31021224044), we get a palindrome (75063436057).

The spelling of 44042212013 in words is "forty-four billion, forty-two million, two hundred twelve thousand, thirteen".