55443020077320 has 256 divisors, whose sum is σ = 179417882822400. Its totient is φ = 13662940262400.

The previous prime is 55443020077307. The next prime is 55443020077351. The reversal of 55443020077320 is 2377002034455.

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 63 ways as a sum of consecutive naturals, for example, 19579270 + ... + 22231370.

It is an arithmetic number, because the mean of its divisors is an integer number (700851104775).

Almost surely, 2^{55443020077320} 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 55443020077320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89708941411200).

55443020077320 is an abundant number, since it is smaller than the sum of its proper divisors (123974862745080).

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

55443020077320 is a wasteful number, since it uses less digits than its factorization.

55443020077320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652360 (or 2652356 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 42.

The spelling of 55443020077320 in words is "fifty-five trillion, four hundred forty-three billion, twenty million, seventy-seven thousand, three hundred twenty".