444321661552 has 20 divisors (see below), whose sum is σ = 906182336680. Its totient is φ = 210468155328.

The previous prime is 444321661543. The next prime is 444321661561. The reversal of 444321661552 is 255166123444.

It is an interprime number because it is at equal distance from previous prime (444321661543) and next prime (444321661561).

It is a junction number, because it is equal to n+sod(n) for n = 444321661499 and 444321661508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730791903 + ... + 730792510.

It is an arithmetic number, because the mean of its divisors is an integer number (45309116834).

Almost surely, 2^444321661552 is an apocalyptic number.

It is an amenable number.

444321661552 is an abundant number, since it is smaller than the sum of its proper divisors (461860675128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444321661552 is a wasteful number, since it uses less digits than its factorization.

444321661552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461584440 (or 1461584434 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

Adding to 444321661552 its reverse (255166123444), we get a palindrome (699487784996).

The spelling of 444321661552 in words is "four hundred forty-four billion, three hundred twenty-one million, six hundred sixty-one thousand, five hundred fifty-two".