44455342021 has 6 divisors (see below), whose sum is σ = 45935645766. Its totient is φ = 43021297800.

The previous prime is 44455342013. The next prime is 44455342037. The reversal of 44455342021 is 12024355444.

It can be written as a sum of positive squares in only one way, i.e., 27454833025 + 17000508996 = 165695^2 + 130386^2 .

It is not a de Polignac number, because 44455342021 - 2³ = 44455342013 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 (44455349021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23128770 + ... + 23130691.

It is an arithmetic number, because the mean of its divisors is an integer number (7655940961).

Almost surely, 2^44455342021 is an apocalyptic number.

It is an amenable number.

44455342021 is a deficient number, since it is larger than the sum of its proper divisors (1480303745).

44455342021 is an equidigital number, since it uses as much as digits as its factorization.

44455342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46259523 (or 46259492 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 44455342021 its reverse (12024355444), we get a palindrome (56479697465).

The spelling of 44455342021 in words is "forty-four billion, four hundred fifty-five million, three hundred forty-two thousand, twenty-one".