85930247677 has 2 divisors, whose sum is σ = 85930247678. Its totient is φ = 85930247676.

The previous prime is 85930247581. The next prime is 85930247707. The reversal of 85930247677 is 77674203958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56307018681 + 29623228996 = 237291^2 + 172114^2 .

It is a cyclic number.

It is not a de Polignac number, because 85930247677 - 2⁷ = 85930247549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85930244677) 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, 42965123838 + 42965123839.

It is an arithmetic number, because the mean of its divisors is an integer number (42965123839).

Almost surely, 2^85930247677 is an apocalyptic number.

It is an amenable number.

85930247677 is a deficient number, since it is larger than the sum of its proper divisors (1).

85930247677 is an equidigital number, since it uses as much as digits as its factorization.

85930247677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17781120, while the sum is 58.

The spelling of 85930247677 in words is "eighty-five billion, nine hundred thirty million, two hundred forty-seven thousand, six hundred seventy-seven".