44313521621 has 4 divisors (see below), whose sum is σ = 44327723244. Its totient is φ = 44299320000.

The previous prime is 44313521599. The next prime is 44313521657. The reversal of 44313521621 is 12612531344.

44313521621 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.

It can be written as a sum of positive squares in 2 ways, for example, as 11038654225 + 33274867396 = 105065^2 + 182414^2 .

It is a cyclic number.

It is not a de Polignac number, because 44313521621 - 2¹⁸ = 44313259477 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 (44313521221) 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, 7096130 + ... + 7102371.

It is an arithmetic number, because the mean of its divisors is an integer number (11081930811).

Almost surely, 2^44313521621 is an apocalyptic number.

It is an amenable number.

44313521621 is a deficient number, since it is larger than the sum of its proper divisors (14201623).

44313521621 is a wasteful number, since it uses less digits than its factorization.

44313521621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14201622.

The product of its digits is 17280, while the sum is 32.

The spelling of 44313521621 in words is "forty-four billion, three hundred thirteen million, five hundred twenty-one thousand, six hundred twenty-one".