49776866773 has 2 divisors, whose sum is σ = 49776866774. Its totient is φ = 49776866772.

The previous prime is 49776866743. The next prime is 49776866819. The reversal of 49776866773 is 37766867794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48291381009 + 1485485764 = 219753^2 + 38542^2 .

It is a cyclic number.

It is not a de Polignac number, because 49776866773 - 2¹³ = 49776858581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49776866723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24888433386 + 24888433387.

It is an arithmetic number, because the mean of its divisors is an integer number (24888433387).

Almost surely, 2^49776866773 is an apocalyptic number.

It is an amenable number.

49776866773 is a deficient number, since it is larger than the sum of its proper divisors (1).

49776866773 is an equidigital number, since it uses as much as digits as its factorization.

49776866773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448084224, while the sum is 70.

The spelling of 49776866773 in words is "forty-nine billion, seven hundred seventy-six million, eight hundred sixty-six thousand, seven hundred seventy-three".