86866784656 has 20 divisors (see below), whose sum is σ = 171157014000. Its totient is φ = 42697232672.

The previous prime is 86866784593. The next prime is 86866784659. The reversal of 86866784656 is 65648766868.

It is not an unprimeable number, because it can be changed into a prime (86866784659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46009006 + ... + 46010893.

It is an arithmetic number, because the mean of its divisors is an integer number (8557850700).

Almost surely, 2^86866784656 is an apocalyptic number.

It is an amenable number.

86866784656 is a deficient number, since it is larger than the sum of its proper divisors (84290229344).

86866784656 is a wasteful number, since it uses less digits than its factorization.

86866784656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92019966 (or 92019960 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 70.

The spelling of 86866784656 in words is "eighty-six billion, eight hundred sixty-six million, seven hundred eighty-four thousand, six hundred fifty-six".