85649287579 has 16 divisors (see below), whose sum is σ = 95472604800. Its totient is φ = 76358726784.

The previous prime is 85649287547. The next prime is 85649287601. The reversal of 85649287579 is 97578294658.

It is a cyclic number.

It is not a de Polignac number, because 85649287579 - 2⁵ = 85649287547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85649287279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4078384 + ... + 4099330.

It is an arithmetic number, because the mean of its divisors is an integer number (5967037800).

Almost surely, 2^85649287579 is an apocalyptic number.

85649287579 is a deficient number, since it is larger than the sum of its proper divisors (9823317221).

85649287579 is a wasteful number, since it uses less digits than its factorization.

85649287579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33642.

The product of its digits is 304819200, while the sum is 70.

The spelling of 85649287579 in words is "eighty-five billion, six hundred forty-nine million, two hundred eighty-seven thousand, five hundred seventy-nine".