44121440013 has 16 divisors (see below), whose sum is σ = 67988096640. Its totient is φ = 24928966656.

The previous prime is 44121439961. The next prime is 44121440023. The reversal of 44121440013 is 31004412144.

It is not a de Polignac number, because 44121440013 - 2⁶ = 44121439949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44121440023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11801620 + ... + 11805357.

It is an arithmetic number, because the mean of its divisors is an integer number (4249256040).

Almost surely, 2^44121440013 is an apocalyptic number.

It is an amenable number.

44121440013 is a deficient number, since it is larger than the sum of its proper divisors (23866656627).

44121440013 is a wasteful number, since it uses less digits than its factorization.

44121440013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23607076.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 44121440013 its reverse (31004412144), we get a palindrome (75125852157).

The spelling of 44121440013 in words is "forty-four billion, one hundred twenty-one million, four hundred forty thousand, thirteen".