55243104840 has 768 divisors, whose sum is σ = 239721431040. Its totient is φ = 11104128000.

The previous prime is 55243104811. The next prime is 55243104863. The reversal of 55243104840 is 4840134255.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55243104795 and 55243104804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 23200450 + ... + 23202830.

It is an arithmetic number, because the mean of its divisors is an integer number (312137280).

Almost surely, 2^55243104840 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 55243104840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119860715520).

55243104840 is an abundant number, since it is smaller than the sum of its proper divisors (184478326200).

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

55243104840 is a wasteful number, since it uses less digits than its factorization.

55243104840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456 (or 2440 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 55243104840 in words is "fifty-five billion, two hundred forty-three million, one hundred four thousand, eight hundred forty".