50778576020717 has 4 divisors (see below), whose sum is σ = 50778591539580. Its totient is φ = 50778560501856.

The previous prime is 50778576020639. The next prime is 50778576020801. The reversal of 50778576020717 is 71702067587705.

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 41040500313796 + 9738075706921 = 6406286^2 + 3120589^2 .

It is a cyclic number.

It is not a de Polignac number, because 50778576020717 - 2¹⁰ = 50778576019693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50778576020717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50778576920717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 726578 + ... + 10103715.

It is an arithmetic number, because the mean of its divisors is an integer number (12694647884895).

Almost surely, 2^{50778576020717} is an apocalyptic number.

It is an amenable number.

50778576020717 is a deficient number, since it is larger than the sum of its proper divisors (15518863).

50778576020717 is a wasteful number, since it uses less digits than its factorization.

50778576020717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15518862.

The product of its (nonzero) digits is 40336800, while the sum is 62.

The spelling of 50778576020717 in words is "fifty trillion, seven hundred seventy-eight billion, five hundred seventy-six million, twenty thousand, seven hundred seventeen".