77527650089 has 2 divisors, whose sum is σ = 77527650090. Its totient is φ = 77527650088.

The previous prime is 77527650077. The next prime is 77527650121. The reversal of 77527650089 is 98005672577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77246752489 + 280897600 = 277933^2 + 16760^2 .

It is a cyclic number.

It is not a de Polignac number, because 77527650089 - 2⁴ = 77527650073 is a prime.

It is not a weakly prime, because it can be changed into another prime (77527650589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38763825044 + 38763825045.

It is an arithmetic number, because the mean of its divisors is an integer number (38763825045).

Almost surely, 2^77527650089 is an apocalyptic number.

It is an amenable number.

77527650089 is a deficient number, since it is larger than the sum of its proper divisors (1).

77527650089 is an equidigital number, since it uses as much as digits as its factorization.

77527650089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7408800, while the sum is 56.

The spelling of 77527650089 in words is "seventy-seven billion, five hundred twenty-seven million, six hundred fifty thousand, eighty-nine".