85436562677 has 2 divisors, whose sum is σ = 85436562678. Its totient is φ = 85436562676.

The previous prime is 85436562613. The next prime is 85436562713. The reversal of 85436562677 is 77626563458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81635346961 + 3801215716 = 285719^2 + 61654^2 .

It is a cyclic number.

It is not a de Polignac number, because 85436562677 - 2⁶ = 85436562613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85436562077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42718281338 + 42718281339.

It is an arithmetic number, because the mean of its divisors is an integer number (42718281339).

Almost surely, 2^85436562677 is an apocalyptic number.

It is an amenable number.

85436562677 is a deficient number, since it is larger than the sum of its proper divisors (1).

85436562677 is an equidigital number, since it uses as much as digits as its factorization.

85436562677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50803200, while the sum is 59.

The spelling of 85436562677 in words is "eighty-five billion, four hundred thirty-six million, five hundred sixty-two thousand, six hundred seventy-seven".