6416545658641 has 4 divisors (see below), whose sum is σ = 6793989520932. Its totient is φ = 6039101796352.

The previous prime is 6416545658603. The next prime is 6416545658651. The reversal of 6416545658641 is 1468565456146.

6416545658641 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3698202071041 + 2718343587600 = 1923071^2 + 1648740^2 .

It is a cyclic number.

It is not a de Polignac number, because 6416545658641 - 2²⁵ = 6416512104209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6416545658641.

It is not an unprimeable number, because it can be changed into a prime (6416545658651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188721931120 + ... + 188721931153.

It is an arithmetic number, because the mean of its divisors is an integer number (1698497380233).

Almost surely, 2^{6416545658641} is an apocalyptic number.

It is an amenable number.

6416545658641 is a deficient number, since it is larger than the sum of its proper divisors (377443862291).

6416545658641 is a wasteful number, since it uses less digits than its factorization.

6416545658641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377443862290.

The product of its digits is 82944000, while the sum is 61.

The spelling of 6416545658641 in words is "six trillion, four hundred sixteen billion, five hundred forty-five million, six hundred fifty-eight thousand, six hundred forty-one".