215044145305 has 48 divisors (see below), whose sum is σ = 290001905856. Its totient is φ = 151809759360.

The previous prime is 215044145263. The next prime is 215044145339. The reversal of 215044145305 is 503541440512.

It is not a de Polignac number, because 215044145305 - 2¹⁹ = 215043621017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16569799 + ... + 16582771.

It is an arithmetic number, because the mean of its divisors is an integer number (6041706372).

Almost surely, 2^215044145305 is an apocalyptic number.

It is an amenable number.

215044145305 is a deficient number, since it is larger than the sum of its proper divisors (74957760551).

215044145305 is a wasteful number, since it uses less digits than its factorization.

215044145305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13238 (or 13195 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 215044145305 its reverse (503541440512), we get a palindrome (718585585817).

The spelling of 215044145305 in words is "two hundred fifteen billion, forty-four million, one hundred forty-five thousand, three hundred five".