215652440343 has 8 divisors (see below), whose sum is σ = 288010290688. Its totient is φ = 143531441784.

The previous prime is 215652440309. The next prime is 215652440347. The reversal of 215652440343 is 343044256512.

215652440343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 215652440343 - 2⁶ = 215652440279 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 (215652440347) 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 7 ways as a sum of consecutive naturals, for example, 59210821 + ... + 59214462.

It is an arithmetic number, because the mean of its divisors is an integer number (36001286336).

Almost surely, 2^215652440343 is an apocalyptic number.

215652440343 is a deficient number, since it is larger than the sum of its proper divisors (72357850345).

215652440343 is a wasteful number, since it uses less digits than its factorization.

215652440343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118425893.

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 215652440343 its reverse (343044256512), we get a palindrome (558696696855).

The spelling of 215652440343 in words is "two hundred fifteen billion, six hundred fifty-two million, four hundred forty thousand, three hundred forty-three".