85947712705 has 8 divisors (see below), whose sum is σ = 103157900352. Its totient is φ = 68744406768.

The previous prime is 85947712673. The next prime is 85947712709. The reversal of 85947712705 is 50721774958.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85947712705 - 2⁵ = 85947712673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85947712709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1692909 + ... + 1742938.

It is an arithmetic number, because the mean of its divisors is an integer number (12894737544).

Almost surely, 2^85947712705 is an apocalyptic number.

It is an amenable number.

85947712705 is a deficient number, since it is larger than the sum of its proper divisors (17210187647).

85947712705 is a wasteful number, since it uses less digits than its factorization.

85947712705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440855.

The product of its (nonzero) digits is 4939200, while the sum is 55.

The spelling of 85947712705 in words is "eighty-five billion, nine hundred forty-seven million, seven hundred twelve thousand, seven hundred five".