44001121013 has 8 divisors (see below), whose sum is σ = 44307113400. Its totient is φ = 43695271360.

The previous prime is 44001121009. The next prime is 44001121049. The reversal of 44001121013 is 31012110044.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1786076644 + 42215044369 = 42262^2 + 205463^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44001121013 - 2² = 44001121009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44001120982 and 44001121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44001123013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625331 + ... + 692127.

It is an arithmetic number, because the mean of its divisors is an integer number (5538389175).

Almost surely, 2^44001121013 is an apocalyptic number.

It is an amenable number.

44001121013 is a deficient number, since it is larger than the sum of its proper divisors (305992387).

44001121013 is a wasteful number, since it uses less digits than its factorization.

44001121013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71367.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 44001121013 its reverse (31012110044), we get a palindrome (75013231057).

The spelling of 44001121013 in words is "forty-four billion, one million, one hundred twenty-one thousand, thirteen".