3621816253450 has 48 divisors (see below), whose sum is σ = 6803221095000. Its totient is φ = 1434413629440.

The previous prime is 3621816253373. The next prime is 3621816253457. The reversal of 3621816253450 is 543526181263.

It is a happy number.

It is a Cunningham number, because it is equal to 1903107²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 46120569049 + 3575695684401 = 214757^2 + 1890951^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3621816253450.

It is not an unprimeable number, because it can be changed into a prime (3621816253457) 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 23 ways as a sum of consecutive naturals, for example, 7443226 + ... + 7914874.

Almost surely, 2^{3621816253450} is an apocalyptic number.

3621816253450 is a deficient number, since it is larger than the sum of its proper divisors (3181404841550).

3621816253450 is a wasteful number, since it uses less digits than its factorization.

3621816253450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473179 (or 473174 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 3621816253450 in words is "three trillion, six hundred twenty-one billion, eight hundred sixteen million, two hundred fifty-three thousand, four hundred fifty".