77860852068017 has 2 divisors, whose sum is σ = 77860852068018. Its totient is φ = 77860852068016.

The previous prime is 77860852068001. The next prime is 77860852068121. The reversal of 77860852068017 is 71086025806877.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76906164787456 + 954687280561 = 8769616^2 + 977081^2 .

It is a cyclic number.

It is not a de Polignac number, because 77860852068017 - 2⁴ = 77860852068001 is a prime.

It is not a weakly prime, because it can be changed into another prime (77860852038017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38930426034008 + 38930426034009.

It is an arithmetic number, because the mean of its divisors is an integer number (38930426034009).

Almost surely, 2^{77860852068017} is an apocalyptic number.

It is an amenable number.

77860852068017 is a deficient number, since it is larger than the sum of its proper divisors (1).

77860852068017 is an equidigital number, since it uses as much as digits as its factorization.

77860852068017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63221760, while the sum is 65.

The spelling of 77860852068017 in words is "seventy-seven trillion, eight hundred sixty billion, eight hundred fifty-two million, sixty-eight thousand, seventeen".