55250377728 has 528 divisors, whose sum is σ = 190453142016. Its totient is φ = 13916897280.

The previous prime is 55250377607. The next prime is 55250377747. The reversal of 55250377728 is 82777305255.

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 47 ways as a sum of consecutive naturals, for example, 83585718 + ... + 83586378.

Almost surely, 2^55250377728 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 55250377728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95226571008).

55250377728 is an abundant number, since it is smaller than the sum of its proper divisors (135202764288).

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

55250377728 is a wasteful number, since it uses less digits than its factorization.

55250377728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 4116000, while the sum is 51.

The spelling of 55250377728 in words is "fifty-five billion, two hundred fifty million, three hundred seventy-seven thousand, seven hundred twenty-eight".