44661212521 has 2 divisors, whose sum is σ = 44661212522. Its totient is φ = 44661212520.

The previous prime is 44661212503. The next prime is 44661212539. The reversal of 44661212521 is 12521216644.

It is a balanced prime because it is at equal distance from previous prime (44661212503) and next prime (44661212539).

It can be written as a sum of positive squares in only one way, i.e., 29768671296 + 14892541225 = 172536^2 + 122035^2 .

It is a cyclic number.

It is not a de Polignac number, because 44661212521 - 2⁹ = 44661212009 is a prime.

It is not a weakly prime, because it can be changed into another prime (44661212501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22330606260 + 22330606261.

It is an arithmetic number, because the mean of its divisors is an integer number (22330606261).

Almost surely, 2^44661212521 is an apocalyptic number.

It is an amenable number.

44661212521 is a deficient number, since it is larger than the sum of its proper divisors (1).

44661212521 is an equidigital number, since it uses as much as digits as its factorization.

44661212521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 34.

The spelling of 44661212521 in words is "forty-four billion, six hundred sixty-one million, two hundred twelve thousand, five hundred twenty-one".