85507933591 has 2 divisors, whose sum is σ = 85507933592. Its totient is φ = 85507933590.

The previous prime is 85507933559. The next prime is 85507933613. The reversal of 85507933591 is 19533970558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85507933591 - 2⁵ = 85507933559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85507930591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42753966795 + 42753966796.

It is an arithmetic number, because the mean of its divisors is an integer number (42753966796).

Almost surely, 2^85507933591 is an apocalyptic number.

85507933591 is a deficient number, since it is larger than the sum of its proper divisors (1).

85507933591 is an equidigital number, since it uses as much as digits as its factorization.

85507933591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103000, while the sum is 55.

The spelling of 85507933591 in words is "eighty-five billion, five hundred seven million, nine hundred thirty-three thousand, five hundred ninety-one".