44001220044 has 24 divisors (see below), whose sum is σ = 103686046128. Its totient is φ = 14521854400.

The previous prime is 44001220027. The next prime is 44001220063. The reversal of 44001220044 is 44002210044.

It is a super-2 number, since 2×44001220044² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 44001220044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18151107 + ... + 18153530.

It is an arithmetic number, because the mean of its divisors is an integer number (4320251922).

Almost surely, 2^44001220044 is an apocalyptic number.

It is an amenable number.

44001220044 is an abundant number, since it is smaller than the sum of its proper divisors (59684826084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44001220044 is a wasteful number, since it uses less digits than its factorization.

44001220044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36304745 (or 36304743 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 44001220044 its reverse (44002210044), we get a palindrome (88003430088).

The spelling of 44001220044 in words is "forty-four billion, one million, two hundred twenty thousand, forty-four".