50661213254777 has 2 divisors, whose sum is σ = 50661213254778. Its totient is φ = 50661213254776.

The previous prime is 50661213254737. The next prime is 50661213254819. The reversal of 50661213254777 is 77745231216605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27325512119161 + 23335701135616 = 5227381^2 + 4830704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50661213254777 is a prime.

It is not a weakly prime, because it can be changed into another prime (50661213254737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25330606627388 + 25330606627389.

It is an arithmetic number, because the mean of its divisors is an integer number (25330606627389).

Almost surely, 2^{50661213254777} is an apocalyptic number.

It is an amenable number.

50661213254777 is a deficient number, since it is larger than the sum of its proper divisors (1).

50661213254777 is an equidigital number, since it uses as much as digits as its factorization.

50661213254777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14817600, while the sum is 56.

The spelling of 50661213254777 in words is "fifty trillion, six hundred sixty-one billion, two hundred thirteen million, two hundred fifty-four thousand, seven hundred seventy-seven".