3545120828866 has 12 divisors (see below), whose sum is σ = 5338951820406. Its totient is φ = 1765498358000.

The previous prime is 3545120828759. The next prime is 3545120828911. The reversal of 3545120828866 is 6688280215453.

It can be written as a sum of positive squares in only one way, i.e., 3334367300625 + 210753528241 = 1826025^2 + 459079^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3545120828866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13941715 + ... + 14193718.

Almost surely, 2^{3545120828866} is an apocalyptic number.

3545120828866 is a deficient number, since it is larger than the sum of its proper divisors (1793830991540).

3545120828866 is an equidigital number, since it uses as much as digits as its factorization.

3545120828866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28135937 (or 28135686 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 58.

The spelling of 3545120828866 in words is "three trillion, five hundred forty-five billion, one hundred twenty million, eight hundred twenty-eight thousand, eight hundred sixty-six".