4416566640861 has 16 divisors (see below), whose sum is σ = 6118417900800. Its totient is φ = 2830433299008.

The previous prime is 4416566640847. The next prime is 4416566640869. The reversal of 4416566640861 is 1680466656144.

It is a happy number.

It is not a de Polignac number, because 4416566640861 - 2¹⁸ = 4416566378717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4416566640869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110820981 + ... + 110860826.

It is an arithmetic number, because the mean of its divisors is an integer number (382401118800).

Almost surely, 2^{4416566640861} is an apocalyptic number.

It is an amenable number.

4416566640861 is a deficient number, since it is larger than the sum of its proper divisors (1701851259939).

4416566640861 is a wasteful number, since it uses less digits than its factorization.

4416566640861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221682068.

The product of its (nonzero) digits is 19906560, while the sum is 57.

The spelling of 4416566640861 in words is "four trillion, four hundred sixteen billion, five hundred sixty-six million, six hundred forty thousand, eight hundred sixty-one".