85386864661 has 8 divisors (see below), whose sum is σ = 97592900544. Its totient is φ = 73182806880.

The previous prime is 85386864653. The next prime is 85386864683. The reversal of 85386864661 is 16646868358.

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 85386864661 - 2³ = 85386864653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85386864661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85386864611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400840 + ... + 575713.

It is an arithmetic number, because the mean of its divisors is an integer number (12199112568).

Almost surely, 2^85386864661 is an apocalyptic number.

It is an amenable number.

85386864661 is a deficient number, since it is larger than the sum of its proper divisors (12206035883).

85386864661 is a wasteful number, since it uses less digits than its factorization.

85386864661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989051.

The product of its digits is 39813120, while the sum is 61.

The spelling of 85386864661 in words is "eighty-five billion, three hundred eighty-six million, eight hundred sixty-four thousand, six hundred sixty-one".