50505500049978 has 16 divisors (see below), whose sum is σ = 101011098373920. Its totient is φ = 16835150304336.

The previous prime is 50505500049919. The next prime is 50505500050111. The reversal of 50505500049978 is 87994000550505.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3739176 + ... + 10723452.

It is an arithmetic number, because the mean of its divisors is an integer number (6313193648370).

Almost surely, 2^{50505500049978} is an apocalyptic number.

50505500049978 is an abundant number, since it is smaller than the sum of its proper divisors (50505598323942).

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

50505500049978 is a wasteful number, since it uses less digits than its factorization.

50505500049978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8189501.

The product of its (nonzero) digits is 11340000, while the sum is 57.

The spelling of 50505500049978 in words is "fifty trillion, five hundred five billion, five hundred million, forty-nine thousand, nine hundred seventy-eight".