50575776665 has 4 divisors (see below), whose sum is σ = 60690932004. Its totient is φ = 40460621328.

The previous prime is 50575776649. The next prime is 50575776683. The reversal of 50575776665 is 56667757505.

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 7443548176 + 43132228489 = 86276^2 + 207683^2 .

It is a cyclic number.

It is not a de Polignac number, because 50575776665 - 2⁴ = 50575776649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 5057577662 + ... + 5057577671.

It is an arithmetic number, because the mean of its divisors is an integer number (15172733001).

Almost surely, 2^50575776665 is an apocalyptic number.

It is an amenable number.

50575776665 is a deficient number, since it is larger than the sum of its proper divisors (10115155339).

50575776665 is a wasteful number, since it uses less digits than its factorization.

50575776665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10115155338.

The product of its (nonzero) digits is 46305000, while the sum is 59.

The spelling of 50575776665 in words is "fifty billion, five hundred seventy-five million, seven hundred seventy-six thousand, six hundred sixty-five".