55440012544 has 216 divisors, whose sum is σ = 133306834752. Its totient is φ = 22539264000.

The previous prime is 55440012503. The next prime is 55440012583. The reversal of 55440012544 is 44521004455.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220876419 + ... + 220876669.

It is an arithmetic number, because the mean of its divisors is an integer number (617161272).

Almost surely, 2^55440012544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55440012544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66653417376).

55440012544 is an abundant number, since it is smaller than the sum of its proper divisors (77866822208).

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

55440012544 is a wasteful number, since it uses less digits than its factorization.

55440012544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 55440012544 its reverse (44521004455), we get a palindrome (99961016999).

The spelling of 55440012544 in words is "fifty-five billion, four hundred forty million, twelve thousand, five hundred forty-four".