215406053243 has 8 divisors (see below), whose sum is σ = 226967067600. Its totient is φ = 203867424288.

The previous prime is 215406053209. The next prime is 215406053293. The reversal of 215406053243 is 342350604512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215406053243 - 2⁸ = 215406052987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215406053293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5576588 + ... + 5615081.

It is an arithmetic number, because the mean of its divisors is an integer number (28370883450).

Almost surely, 2^215406053243 is an apocalyptic number.

215406053243 is a deficient number, since it is larger than the sum of its proper divisors (11561014357).

215406053243 is a wasteful number, since it uses less digits than its factorization.

215406053243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192701.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 215406053243 its reverse (342350604512), we get a palindrome (557756657755).

The spelling of 215406053243 in words is "two hundred fifteen billion, four hundred six million, fifty-three thousand, two hundred forty-three".