85075691571 has 36 divisors (see below), whose sum is σ = 133573693968. Its totient is φ = 52154960832.

The previous prime is 85075691551. The next prime is 85075691611. The reversal of 85075691571 is 17519657058.

It is a happy number.

85075691571 is a `hidden beast` number, since 8 + 5 + 0 + 7 + 5 + 69 + 1 + 571 = 666.

It is not a de Polignac number, because 85075691571 - 2⁷ = 85075691443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85075691551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 293685 + ... + 506361.

It is an arithmetic number, because the mean of its divisors is an integer number (3710380388).

Almost surely, 2^85075691571 is an apocalyptic number.

85075691571 is a deficient number, since it is larger than the sum of its proper divisors (48498002397).

85075691571 is a wasteful number, since it uses less digits than its factorization.

85075691571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212972 (or 212956 counting only the distinct ones).

The product of its (nonzero) digits is 2646000, while the sum is 54.

The spelling of 85075691571 in words is "eighty-five billion, seventy-five million, six hundred ninety-one thousand, five hundred seventy-one".