215005040441 has 4 divisors (see below), whose sum is σ = 215046560400. Its totient is φ = 214963520484.

The previous prime is 215005040429. The next prime is 215005040479. The reversal of 215005040441 is 144040500512.

215005040441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215005040441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215005040441.

It is not an unprimeable number, because it can be changed into a prime (215005040141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20752211 + ... + 20762568.

It is an arithmetic number, because the mean of its divisors is an integer number (53761640100).

Almost surely, 2^215005040441 is an apocalyptic number.

It is an amenable number.

215005040441 is a deficient number, since it is larger than the sum of its proper divisors (41519959).

215005040441 is an equidigital number, since it uses as much as digits as its factorization.

215005040441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41519958.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 215005040441 its reverse (144040500512), we get a palindrome (359045540953).

The spelling of 215005040441 in words is "two hundred fifteen billion, five million, forty thousand, four hundred forty-one".