50515421057856 has 336 divisors, whose sum is σ = 146814870159360. Its totient is φ = 16605234938880.

The previous prime is 50515421057813. The next prime is 50515421057861. The reversal of 50515421057856 is 65875012451505.

50515421057856 is a `hidden beast` number, since 5 + 0 + 5 + 1 + 5 + 4 + 2 + 10 + 578 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11939355261 + ... + 11939359491.

Almost surely, 2^{50515421057856} 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 50515421057856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73407435079680).

50515421057856 is an abundant number, since it is smaller than the sum of its proper divisors (96299449101504).

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

50515421057856 is a wasteful number, since it uses less digits than its factorization.

50515421057856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322 (or 5309 counting only the distinct ones).

The product of its (nonzero) digits is 8400000, while the sum is 54.

The spelling of 50515421057856 in words is "fifty trillion, five hundred fifteen billion, four hundred twenty-one million, fifty-seven thousand, eight hundred fifty-six".