75727448777 has 2 divisors, whose sum is σ = 75727448778. Its totient is φ = 75727448776.

The previous prime is 75727448761. The next prime is 75727448801. The reversal of 75727448777 is 77784472757.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58670043961 + 17057404816 = 242219^2 + 130604^2 .

It is a cyclic number.

It is not a de Polignac number, because 75727448777 - 2⁴ = 75727448761 is a prime.

It is not a weakly prime, because it can be changed into another prime (75727448977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37863724388 + 37863724389.

It is an arithmetic number, because the mean of its divisors is an integer number (37863724389).

Almost surely, 2^75727448777 is an apocalyptic number.

It is an amenable number.

75727448777 is a deficient number, since it is larger than the sum of its proper divisors (1).

75727448777 is an equidigital number, since it uses as much as digits as its factorization.

75727448777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150590720, while the sum is 65.

The spelling of 75727448777 in words is "seventy-five billion, seven hundred twenty-seven million, four hundred forty-eight thousand, seven hundred seventy-seven".