50391500077 has 2 divisors, whose sum is σ = 50391500078. Its totient is φ = 50391500076.

The previous prime is 50391500053. The next prime is 50391500099. The reversal of 50391500077 is 77000519305.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32439251881 + 17952248196 = 180109^2 + 133986^2 .

It is a cyclic number.

It is not a de Polignac number, because 50391500077 - 2¹⁵ = 50391467309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50391500177) by changing a digit.

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 as a sum of consecutive naturals, namely, 25195750038 + 25195750039.

It is an arithmetic number, because the mean of its divisors is an integer number (25195750039).

Almost surely, 2^50391500077 is an apocalyptic number.

It is an amenable number.

50391500077 is a deficient number, since it is larger than the sum of its proper divisors (1).

50391500077 is an equidigital number, since it uses as much as digits as its factorization.

50391500077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33075, while the sum is 37.

The spelling of 50391500077 in words is "fifty billion, three hundred ninety-one million, five hundred thousand, seventy-seven".