44135124021 has 8 divisors (see below), whose sum is σ = 65385368960. Its totient is φ = 29423415996.

The previous prime is 44135124001. The next prime is 44135124029. The reversal of 44135124021 is 12042153144.

44135124021 is a `hidden beast` number, since 4 + 413 + 5 + 1 + 240 + 2 + 1 = 666.

It is not a de Polignac number, because 44135124021 - 2¹¹ = 44135121973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1634634223 = 44135124021 / (4 + 4 + 1 + 3 + 5 + 1 + 2 + 4 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44135124029) 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, 817317085 + ... + 817317138.

It is an arithmetic number, because the mean of its divisors is an integer number (8173171120).

Almost surely, 2^44135124021 is an apocalyptic number.

It is an amenable number.

44135124021 is a deficient number, since it is larger than the sum of its proper divisors (21250244939).

44135124021 is a wasteful number, since it uses less digits than its factorization.

44135124021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634634232 (or 1634634226 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 44135124021 its reverse (12042153144), we get a palindrome (56177277165).

The spelling of 44135124021 in words is "forty-four billion, one hundred thirty-five million, one hundred twenty-four thousand, twenty-one".