50277081689 has 2 divisors, whose sum is σ = 50277081690. Its totient is φ = 50277081688.

The previous prime is 50277081683. The next prime is 50277081697. The reversal of 50277081689 is 98618077205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49676831689 + 600250000 = 222883^2 + 24500^2 .

It is a cyclic number.

It is not a de Polignac number, because 50277081689 - 2⁸ = 50277081433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50277081689.

It is not a weakly prime, because it can be changed into another prime (50277081683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25138540844 + 25138540845.

It is an arithmetic number, because the mean of its divisors is an integer number (25138540845).

Almost surely, 2^50277081689 is an apocalyptic number.

It is an amenable number.

50277081689 is a deficient number, since it is larger than the sum of its proper divisors (1).

50277081689 is an equidigital number, since it uses as much as digits as its factorization.

50277081689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 53.

The spelling of 50277081689 in words is "fifty billion, two hundred seventy-seven million, eighty-one thousand, six hundred eighty-nine".