85665474075 has 24 divisors (see below), whose sum is σ = 141672311856. Its totient is φ = 45675760000.

The previous prime is 85665474073. The next prime is 85665474079. The reversal of 85665474075 is 57047456658.

It is not a de Polignac number, because 85665474075 - 2¹ = 85665474073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85665474073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123265 + ... + 431885.

It is an arithmetic number, because the mean of its divisors is an integer number (5903012994).

Almost surely, 2^85665474075 is an apocalyptic number.

85665474075 is a deficient number, since it is larger than the sum of its proper divisors (56006837781).

85665474075 is a wasteful number, since it uses less digits than its factorization.

85665474075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312335 (or 312330 counting only the distinct ones).

The product of its (nonzero) digits is 28224000, while the sum is 57.

The spelling of 85665474075 in words is "eighty-five billion, six hundred sixty-five million, four hundred seventy-four thousand, seventy-five".