86664847988 has 6 divisors (see below), whose sum is σ = 151663483986. Its totient is φ = 43332423992.

The previous prime is 86664847933. The next prime is 86664848003. The reversal of 86664847988 is 88974846668.

It can be written as a sum of positive squares in only one way, i.e., 86646632164 + 18215824 = 294358^2 + 4268^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10833105995 + ... + 10833106002.

It is an arithmetic number, because the mean of its divisors is an integer number (25277247331).

Almost surely, 2^86664847988 is an apocalyptic number.

It is an amenable number.

86664847988 is a deficient number, since it is larger than the sum of its proper divisors (64998635998).

86664847988 is a wasteful number, since it uses less digits than its factorization.

86664847988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21666212001 (or 21666211999 counting only the distinct ones).

The product of its digits is 891813888, while the sum is 74.

The spelling of 86664847988 in words is "eighty-six billion, six hundred sixty-four million, eight hundred forty-seven thousand, nine hundred eighty-eight".