444646060335221 has 4 divisors (see below), whose sum is σ = 444646215063372. Its totient is φ = 444645905607072.

The previous prime is 444646060335181. The next prime is 444646060335229. The reversal of 444646060335221 is 122533060646444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 371005806003121 + 73640254332100 = 19261511^2 + 8581390^2 .

It is a cyclic number.

It is not a de Polignac number, because 444646060335221 - 2¹⁸ = 444646060073077 is a prime.

It is a super-3 number, since 3×444646060335221³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444646060335221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444646060335229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72970310 + ... + 78828663.

It is an arithmetic number, because the mean of its divisors is an integer number (111161553765843).

Almost surely, 2^{444646060335221} is an apocalyptic number.

It is an amenable number.

444646060335221 is a deficient number, since it is larger than the sum of its proper divisors (154728151).

444646060335221 is a wasteful number, since it uses less digits than its factorization.

444646060335221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154728150.

The product of its (nonzero) digits is 9953280, while the sum is 50.

The spelling of 444646060335221 in words is "four hundred forty-four trillion, six hundred forty-six billion, sixty million, three hundred thirty-five thousand, two hundred twenty-one".