444513353221 has 8 divisors (see below), whose sum is σ = 508193097920. Its totient is φ = 380878067808.

The previous prime is 444513353203. The next prime is 444513353311. The reversal of 444513353221 is 122353315444.

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

It is not a de Polignac number, because 444513353221 - 2³⁵ = 410153614853 is a prime.

It is a super-2 number, since 2×444513353221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444513357221) 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, 11093391 + ... + 11133388.

It is an arithmetic number, because the mean of its divisors is an integer number (63524137240).

Almost surely, 2^444513353221 is an apocalyptic number.

It is an amenable number.

444513353221 is a deficient number, since it is larger than the sum of its proper divisors (63679744699).

444513353221 is a wasteful number, since it uses less digits than its factorization.

444513353221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22229643.

The product of its digits is 172800, while the sum is 37.

Adding to 444513353221 its reverse (122353315444), we get a palindrome (566866668665).

The spelling of 444513353221 in words is "four hundred forty-four billion, five hundred thirteen million, three hundred fifty-three thousand, two hundred twenty-one".