4687043644866 has 128 divisors (see below), whose sum is σ = 11183628828672. Its totient is φ = 1292891904000.

The previous prime is 4687043644861. The next prime is 4687043644873. The reversal of 4687043644866 is 6684463407864.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 4687043644797 and 4687043644806.

It is not an unprimeable number, because it can be changed into a prime (4687043644861) 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 63 ways as a sum of consecutive naturals, for example, 60934411 + ... + 61011281.

It is an arithmetic number, because the mean of its divisors is an integer number (87372100224).

Almost surely, 2^{4687043644866} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4687043644866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5591814414336).

4687043644866 is an abundant number, since it is smaller than the sum of its proper divisors (6496585183806).

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

4687043644866 is a wasteful number, since it uses less digits than its factorization.

4687043644866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78688.

The product of its (nonzero) digits is 445906944, while the sum is 66.

The spelling of 4687043644866 in words is "four trillion, six hundred eighty-seven billion, forty-three million, six hundred forty-four thousand, eight hundred sixty-six".