8529971709985 has 8 divisors (see below), whose sum is σ = 11166508420416. Its totient is φ = 6203615789040.

The previous prime is 8529971709979. The next prime is 8529971710019. The reversal of 8529971709985 is 5899071799258.

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

It is not a de Polignac number, because 8529971709985 - 2³ = 8529971709977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77545197309 + ... + 77545197418.

It is an arithmetic number, because the mean of its divisors is an integer number (1395813552552).

Almost surely, 2^{8529971709985} is an apocalyptic number.

It is an amenable number.

8529971709985 is a deficient number, since it is larger than the sum of its proper divisors (2636536710431).

8529971709985 is a wasteful number, since it uses less digits than its factorization.

8529971709985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155090394743.

The product of its (nonzero) digits is 1028764800, while the sum is 79.

The spelling of 8529971709985 in words is "eight trillion, five hundred twenty-nine billion, nine hundred seventy-one million, seven hundred nine thousand, nine hundred eighty-five".