50257805778 has 48 divisors (see below), whose sum is σ = 113187424896. Its totient is φ = 16713663120.

The previous prime is 50257805777. The next prime is 50257805797. The reversal of 50257805778 is 87750875205.

50257805778 is a `hidden beast` number, since 502 + 5 + 7 + 80 + 57 + 7 + 8 = 666.

50257805778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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 (50257805777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89500 + ... + 329432.

It is an arithmetic number, because the mean of its divisors is an integer number (2358071352).

Almost surely, 2^50257805778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50257805778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56593712448).

50257805778 is an abundant number, since it is smaller than the sum of its proper divisors (62929619118).

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

50257805778 is a wasteful number, since it uses less digits than its factorization.

50257805778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240381 (or 240369 counting only the distinct ones).

The product of its (nonzero) digits is 5488000, while the sum is 54.

The spelling of 50257805778 in words is "fifty billion, two hundred fifty-seven million, eight hundred five thousand, seven hundred seventy-eight".