4444332413021 has 8 divisors (see below), whose sum is σ = 4706230153464. Its totient is φ = 4182486497280.

The previous prime is 4444332413009. The next prime is 4444332413039. The reversal of 4444332413021 is 1203142334444.

It can be written as a sum of positive squares in 4 ways, for example, as 841510840921 + 3602821572100 = 917339^2 + 1898110^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4444332413021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4444332413221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12779540 + ... + 13122701.

It is an arithmetic number, because the mean of its divisors is an integer number (588278769183).

Almost surely, 2^{4444332413021} is an apocalyptic number.

It is an amenable number.

4444332413021 is a deficient number, since it is larger than the sum of its proper divisors (261897740443).

4444332413021 is a wasteful number, since it uses less digits than its factorization.

4444332413021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25912351.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 4444332413021 its reverse (1203142334444), we get a palindrome (5647474747465).

The spelling of 4444332413021 in words is "four trillion, four hundred forty-four billion, three hundred thirty-two million, four hundred thirteen thousand, twenty-one".