86644444668 has 12 divisors (see below), whose sum is σ = 202170370920. Its totient is φ = 28881481552.

The previous prime is 86644444643. The next prime is 86644444693.

86644444668 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (86644444643) and next prime (86644444693).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×86644444668³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3610185183 + ... + 3610185206.

It is an arithmetic number, because the mean of its divisors is an integer number (16847530910).

Almost surely, 2^86644444668 is an apocalyptic number.

It is an amenable number.

86644444668 is an abundant number, since it is smaller than the sum of its proper divisors (115525926252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86644444668 is a wasteful number, since it uses less digits than its factorization.

86644444668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7220370396 (or 7220370394 counting only the distinct ones).

The product of its digits is 84934656, while the sum is 60.

The spelling of 86644444668 in words is "eighty-six billion, six hundred forty-four million, four hundred forty-four thousand, six hundred sixty-eight".