50281777728 has 588 divisors, whose sum is σ = 185336005248. Its totient is φ = 13246571520.

The previous prime is 50281777703. The next prime is 50281777729. The reversal of 50281777728 is 82777718205.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (50281777729) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 55193593 + ... + 55194503.

Almost surely, 2^50281777728 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 50281777728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92668002624).

50281777728 is an abundant number, since it is smaller than the sum of its proper divisors (135054227520).

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

50281777728 is an equidigital number, since it uses as much as digits as its factorization.

50281777728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 3073280, while the sum is 54.

The spelling of 50281777728 in words is "fifty billion, two hundred eighty-one million, seven hundred seventy-seven thousand, seven hundred twenty-eight".