50778383918016 has 224 divisors, whose sum is σ = 136322871920640. Its totient is φ = 16679443968000.

The previous prime is 50778383917999. The next prime is 50778383918089. The reversal of 50778383918016 is 61081938387705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5323234975 + ... + 5323244513.

Almost surely, 2^{50778383918016} 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 50778383918016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68161435960320).

50778383918016 is an abundant number, since it is smaller than the sum of its proper divisors (85544488002624).

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

50778383918016 is a wasteful number, since it uses less digits than its factorization.

50778383918016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923 (or 10913 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 66.

The spelling of 50778383918016 in words is "fifty trillion, seven hundred seventy-eight billion, three hundred eighty-three million, nine hundred eighteen thousand, sixteen".