50728243440 has 320 divisors, whose sum is σ = 190792074240. Its totient is φ = 10884464640.

The previous prime is 50728243429. The next prime is 50728243519. The reversal of 50728243440 is 4434282705.

It is a happy number.

It is a congruent number.

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, 12021651 + ... + 12025869.

It is an arithmetic number, because the mean of its divisors is an integer number (596225232).

Almost surely, 2^50728243440 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 50728243440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95396037120).

50728243440 is an abundant number, since it is smaller than the sum of its proper divisors (140063830800).

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

50728243440 is a wasteful number, since it uses less digits than its factorization.

50728243440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680 (or 4674 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 39.

The spelling of 50728243440 in words is "fifty billion, seven hundred twenty-eight million, two hundred forty-three thousand, four hundred forty".