85605289441 has 4 divisors (see below), whose sum is σ = 97834616512. Its totient is φ = 73375962372.

The previous prime is 85605289421. The next prime is 85605289447. The reversal of 85605289441 is 14498250658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85605289441 - 2¹¹ = 85605287393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85605289447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6114663525 + ... + 6114663538.

It is an arithmetic number, because the mean of its divisors is an integer number (24458654128).

Almost surely, 2^85605289441 is an apocalyptic number.

It is an amenable number.

85605289441 is a deficient number, since it is larger than the sum of its proper divisors (12229327071).

85605289441 is a wasteful number, since it uses less digits than its factorization.

85605289441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12229327070.

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 85605289441 in words is "eighty-five billion, six hundred five million, two hundred eighty-nine thousand, four hundred forty-one".