44140424033421 has 24 divisors (see below), whose sum is σ = 64745405688600. Its totient is φ = 28974623184000.

The previous prime is 44140424033327. The next prime is 44140424033479. The reversal of 44140424033421 is 12433042404144.

44140424033421 is a `hidden beast` number, since 4 + 4 + 1 + 404 + 240 + 3 + 3 + 4 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10083990780900 + 34056433252521 = 3175530^2 + 5835789^2 .

It is a de Polignac number, because none of the positive numbers 2^k-44140424033421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44140424033221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133977246 + ... + 134306303.

It is an arithmetic number, because the mean of its divisors is an integer number (2697725237025).

Almost surely, 2^{44140424033421} is an apocalyptic number.

It is an amenable number.

44140424033421 is a deficient number, since it is larger than the sum of its proper divisors (20604981655179).

44140424033421 is a wasteful number, since it uses less digits than its factorization.

44140424033421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268283837 (or 268283834 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

Adding to 44140424033421 its reverse (12433042404144), we get a palindrome (56573466437565).

The spelling of 44140424033421 in words is "forty-four trillion, one hundred forty billion, four hundred twenty-four million, thirty-three thousand, four hundred twenty-one".