85865965775 has 24 divisors (see below), whose sum is σ = 109080935040. Its totient is φ = 67014591840.

The previous prime is 85865965769. The next prime is 85865965819. The reversal of 85865965775 is 57756956858.

It is not a de Polignac number, because 85865965775 - 2¹⁴ = 85865949391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85865965699 and 85865965708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 854324 + ... + 949526.

It is an arithmetic number, because the mean of its divisors is an integer number (4545038960).

Almost surely, 2^85865965775 is an apocalyptic number.

85865965775 is a deficient number, since it is larger than the sum of its proper divisors (23214969265).

85865965775 is a wasteful number, since it uses less digits than its factorization.

85865965775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96095 (or 96090 counting only the distinct ones).

The product of its digits is 635040000, while the sum is 71.

The spelling of 85865965775 in words is "eighty-five billion, eight hundred sixty-five million, nine hundred sixty-five thousand, seven hundred seventy-five".