55144203243504 has 320 divisors, whose sum is σ = 149536867123200. Its totient is φ = 17488672395264.

The previous prime is 55144203243487. The next prime is 55144203243529. The reversal of 55144203243504 is 40534230244155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19715480634 + ... + 19715483430.

It is an arithmetic number, because the mean of its divisors is an integer number (467302709760).

Almost surely, 2^{55144203243504} 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 55144203243504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74768433561600).

55144203243504 is an abundant number, since it is smaller than the sum of its proper divisors (94392663879696).

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

55144203243504 is a wasteful number, since it uses less digits than its factorization.

55144203243504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680 (or 3674 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 55144203243504 its reverse (40534230244155), we get a palindrome (95678433487659).

The spelling of 55144203243504 in words is "fifty-five trillion, one hundred forty-four billion, two hundred three million, two hundred forty-three thousand, five hundred four".