215541342530341 has 4 divisors (see below), whose sum is σ = 215955049522284. Its totient is φ = 215127635538400.

The previous prime is 215541342530317. The next prime is 215541342530351. The reversal of 215541342530341 is 143035243145512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42543984630625 + 172997357899716 = 6522575^2 + 13152846^2 .

It is a cyclic number.

It is not a de Polignac number, because 215541342530341 - 2⁵ = 215541342530309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215541342530351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206853495190 + ... + 206853496231.

It is an arithmetic number, because the mean of its divisors is an integer number (53988762380571).

Almost surely, 2^{215541342530341} is an apocalyptic number.

It is an amenable number.

215541342530341 is a deficient number, since it is larger than the sum of its proper divisors (413706991943).

215541342530341 is an equidigital number, since it uses as much as digits as its factorization.

215541342530341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413706991942.

The product of its (nonzero) digits is 864000, while the sum is 43.

Adding to 215541342530341 its reverse (143035243145512), we get a palindrome (358576585675853).

The spelling of 215541342530341 in words is "two hundred fifteen trillion, five hundred forty-one billion, three hundred forty-two million, five hundred thirty thousand, three hundred forty-one".