85011771583 has 2 divisors, whose sum is σ = 85011771584. Its totient is φ = 85011771582.

The previous prime is 85011771557. The next prime is 85011771589. The reversal of 85011771583 is 38517711058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85011771583 - 2¹³ = 85011763391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85011771589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42505885791 + 42505885792.

It is an arithmetic number, because the mean of its divisors is an integer number (42505885792).

Almost surely, 2^85011771583 is an apocalyptic number.

85011771583 is a deficient number, since it is larger than the sum of its proper divisors (1).

85011771583 is an equidigital number, since it uses as much as digits as its factorization.

85011771583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235200, while the sum is 46.

The spelling of 85011771583 in words is "eighty-five billion, eleven million, seven hundred seventy-one thousand, five hundred eighty-three".