16784613485641 has 4 divisors (see below), whose sum is σ = 16785248883732. Its totient is φ = 16783978087552.

The previous prime is 16784613485639. The next prime is 16784613485677. The reversal of 16784613485641 is 14658431648761.

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 2009507540041 + 14775105945600 = 1417571^2 + 3843840^2 .

It is a cyclic number.

It is not a de Polignac number, because 16784613485641 - 2¹ = 16784613485639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16784613485681) 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, 317659420 + ... + 317712253.

It is an arithmetic number, because the mean of its divisors is an integer number (4196312220933).

Almost surely, 2^{16784613485641} is an apocalyptic number.

It is an amenable number.

16784613485641 is a deficient number, since it is larger than the sum of its proper divisors (635398091).

16784613485641 is an equidigital number, since it uses as much as digits as its factorization.

16784613485641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635398090.

The product of its digits is 92897280, while the sum is 64.

The spelling of 16784613485641 in words is "sixteen trillion, seven hundred eighty-four billion, six hundred thirteen million, four hundred eighty-five thousand, six hundred forty-one".