85664646658 has 16 divisors (see below), whose sum is σ = 129540277440. Its totient is φ = 42485120496.

The previous prime is 85664646653. The next prime is 85664646733.

85664646658 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 85664646658.

It is not an unprimeable number, because it can be changed into a prime (85664646653) 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, 162891 + ... + 444817.

It is an arithmetic number, because the mean of its divisors is an integer number (8096267340).

Almost surely, 2^85664646658 is an apocalyptic number.

85664646658 is a deficient number, since it is larger than the sum of its proper divisors (43875630782).

85664646658 is a wasteful number, since it uses less digits than its factorization.

85664646658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283161.

The product of its digits is 199065600, while the sum is 64.

The spelling of 85664646658 in words is "eighty-five billion, six hundred sixty-four million, six hundred forty-six thousand, six hundred fifty-eight".