50778504593 has 4 divisors (see below), whose sum is σ = 52529487540. Its totient is φ = 49027521648.

The previous prime is 50778504583. The next prime is 50778504611. The reversal of 50778504593 is 39540587705.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10591085569 + 40187419024 = 102913^2 + 200468^2 .

It is a cyclic number.

It is not a de Polignac number, because 50778504593 - 2¹² = 50778500497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50778504503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875491430 + ... + 875491487.

It is an arithmetic number, because the mean of its divisors is an integer number (13132371885).

Almost surely, 2^50778504593 is an apocalyptic number.

It is an amenable number.

50778504593 is a deficient number, since it is larger than the sum of its proper divisors (1750982947).

50778504593 is a wasteful number, since it uses less digits than its factorization.

50778504593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750982946.

The product of its (nonzero) digits is 5292000, while the sum is 53.

The spelling of 50778504593 in words is "fifty billion, seven hundred seventy-eight million, five hundred four thousand, five hundred ninety-three".