86661822816668 has 36 divisors (see below), whose sum is σ = 166737112014816. Its totient is φ = 39382653974400.

The previous prime is 86661822816659. The next prime is 86661822816677.

86661822816668 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (86661822816659) and next prime (86661822816677).

It is a junction number, because it is equal to n+sod(n) for n = 86661822816595 and 86661822816604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18543428 + ... + 22741643.

It is an arithmetic number, because the mean of its divisors is an integer number (4631586444856).

Almost surely, 2^{86661822816668} is an apocalyptic number.

It is an amenable number.

86661822816668 is a deficient number, since it is larger than the sum of its proper divisors (80075289198148).

86661822816668 is a wasteful number, since it uses less digits than its factorization.

86661822816668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41289434 (or 41289421 counting only the distinct ones).

The product of its digits is 764411904, while the sum is 74.

The spelling of 86661822816668 in words is "eighty-six trillion, six hundred sixty-one billion, eight hundred twenty-two million, eight hundred sixteen thousand, six hundred sixty-eight".