445203253215 has 144 divisors (see below), whose sum is σ = 912911261184. Its totient is φ = 196606880640.

The previous prime is 445203253213. The next prime is 445203253223. The reversal of 445203253215 is 512352302544.

445203253215 is a `hidden beast` number, since 4 + 4 + 5 + 2 + 0 + 325 + 321 + 5 = 666.

It is not a de Polignac number, because 445203253215 - 2¹ = 445203253213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445203253215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445203253213) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 249133552 + ... + 249135338.

It is an arithmetic number, because the mean of its divisors is an integer number (6339661536).

Almost surely, 2^445203253215 is an apocalyptic number.

445203253215 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

445203253215 is an abundant number, since it is smaller than the sum of its proper divisors (467708007969).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445203253215 is a wasteful number, since it uses less digits than its factorization.

445203253215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690 (or 2656 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 445203253215 its reverse (512352302544), we get a palindrome (957555555759).

The spelling of 445203253215 in words is "four hundred forty-five billion, two hundred three million, two hundred fifty-three thousand, two hundred fifteen".