55444441531320 has 96 divisors (see below), whose sum is σ = 181878495243120. Its totient is φ = 14647005104640.

The previous prime is 55444441531313. The next prime is 55444441531321. The reversal of 55444441531320 is 2313514444455.

55444441531320 is a `hidden beast` number, since 5 + 5 + 4 + 4 + 44 + 41 + 531 + 32 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55444441531321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 719645301 + ... + 719722340.

Almost surely, 2^{55444441531320} is an apocalyptic number.

It is an amenable number.

55444441531320 is an abundant number, since it is smaller than the sum of its proper divisors (126434053711800).

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

55444441531320 is a wasteful number, since it uses less digits than its factorization.

55444441531320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439367765 (or 1439367758 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 45.

Adding to 55444441531320 its reverse (2313514444455), we get a palindrome (57757955975775).

The spelling of 55444441531320 in words is "fifty-five trillion, four hundred forty-four billion, four hundred forty-one million, five hundred thirty-one thousand, three hundred twenty".