44013625621 has 4 divisors (see below), whose sum is σ = 50301286432. Its totient is φ = 37725964812.

The previous prime is 44013625619. The next prime is 44013625637. The reversal of 44013625621 is 12652631044.

44013625621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44013625621 - 2¹ = 44013625619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44013622621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3143830395 + ... + 3143830408.

It is an arithmetic number, because the mean of its divisors is an integer number (12575321608).

Almost surely, 2^44013625621 is an apocalyptic number.

It is an amenable number.

44013625621 is a deficient number, since it is larger than the sum of its proper divisors (6287660811).

44013625621 is an equidigital number, since it uses as much as digits as its factorization.

44013625621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287660810.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 44013625621 in words is "forty-four billion, thirteen million, six hundred twenty-five thousand, six hundred twenty-one".