8661460641668 has 12 divisors (see below), whose sum is σ = 16049177071452. Its totient is φ = 4075981478400.

The previous prime is 8661460641653. The next prime is 8661460641677.

8661460641668 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 5936590726144 + 2724869915524 = 2436512^2 + 1650718^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8661460641668.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63687210533 + ... + 63687210668.

It is an arithmetic number, because the mean of its divisors is an integer number (1337431422621).

Almost surely, 2^{8661460641668} is an apocalyptic number.

It is an amenable number.

8661460641668 is a deficient number, since it is larger than the sum of its proper divisors (7387716429784).

8661460641668 is a wasteful number, since it uses less digits than its factorization.

8661460641668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127374421222 (or 127374421220 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 62.

The spelling of 8661460641668 in words is "eight trillion, six hundred sixty-one billion, four hundred sixty million, six hundred forty-one thousand, six hundred sixty-eight".