50891583456 has 324 divisors, whose sum is σ = 172556053488. Its totient is φ = 14179705344.

The previous prime is 50891583377. The next prime is 50891583497. The reversal of 50891583456 is 65438519805.

50891583456 is a `hidden beast` number, since 5 + 0 + 8 + 9 + 1 + 583 + 4 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 183723990 + ... + 183724266.

It is an arithmetic number, because the mean of its divisors is an integer number (532580412).

Almost surely, 2^50891583456 is an apocalyptic number.

50891583456 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50891583456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86278026744).

50891583456 is an abundant number, since it is smaller than the sum of its proper divisors (121664470032).

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

50891583456 is a wasteful number, since it uses less digits than its factorization.

50891583456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 50891583456 in words is "fifty billion, eight hundred ninety-one million, five hundred eighty-three thousand, four hundred fifty-six".