44544620521 has 2 divisors, whose sum is σ = 44544620522. Its totient is φ = 44544620520.

The previous prime is 44544620507. The next prime is 44544620563. The reversal of 44544620521 is 12502644544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41103507600 + 3441112921 = 202740^2 + 58661^2 .

It is a cyclic number.

It is not a de Polignac number, because 44544620521 - 2²³ = 44536231913 is a prime.

It is a super-2 number, since 2×44544620521² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44544620581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22272310260 + 22272310261.

It is an arithmetic number, because the mean of its divisors is an integer number (22272310261).

Almost surely, 2^44544620521 is an apocalyptic number.

It is an amenable number.

44544620521 is a deficient number, since it is larger than the sum of its proper divisors (1).

44544620521 is an equidigital number, since it uses as much as digits as its factorization.

44544620521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153600, while the sum is 37.

The spelling of 44544620521 in words is "forty-four billion, five hundred forty-four million, six hundred twenty thousand, five hundred twenty-one".