85965964539 has 32 divisors (see below), whose sum is σ = 144885135360. Its totient is φ = 44119147392.

The previous prime is 85965964519. The next prime is 85965964541. The reversal of 85965964539 is 93546956958.

It is not a de Polignac number, because 85965964539 - 2¹⁵ = 85965931771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85965964519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4245219 + ... + 4265420.

It is an arithmetic number, because the mean of its divisors is an integer number (4527660480).

Almost surely, 2^85965964539 is an apocalyptic number.

85965964539 is a deficient number, since it is larger than the sum of its proper divisors (58919170821).

85965964539 is a wasteful number, since it uses less digits than its factorization.

85965964539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8510699.

The product of its digits is 314928000, while the sum is 69.

The spelling of 85965964539 in words is "eighty-five billion, nine hundred sixty-five million, nine hundred sixty-four thousand, five hundred thirty-nine".