85728931075 has 12 divisors (see below), whose sum is σ = 106465205880. Its totient is φ = 68479060160.

The previous prime is 85728931033. The next prime is 85728931177. The reversal of 85728931075 is 57013982758.

It is not a de Polignac number, because 85728931075 - 2²¹ = 85726833923 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2585314 + ... + 2618263.

It is an arithmetic number, because the mean of its divisors is an integer number (8872100490).

Almost surely, 2^85728931075 is an apocalyptic number.

85728931075 is a deficient number, since it is larger than the sum of its proper divisors (20736274805).

85728931075 is a wasteful number, since it uses less digits than its factorization.

85728931075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204246 (or 5204241 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 85728931075 in words is "eighty-five billion, seven hundred twenty-eight million, nine hundred thirty-one thousand, seventy-five".