215140030555243 has 16 divisors (see below), whose sum is σ = 222777652027392. Its totient is φ = 207546886548000.

The previous prime is 215140030555237. The next prime is 215140030555279. The reversal of 215140030555243 is 342555030041512.

It is a cyclic number.

It is not a de Polignac number, because 215140030555243 - 2⁵ = 215140030555211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215140030555196 and 215140030555205.

It is not an unprimeable number, because it can be changed into a prime (215140030555543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7433230 + ... + 22034812.

It is an arithmetic number, because the mean of its divisors is an integer number (13923603251712).

Almost surely, 2^{215140030555243} is an apocalyptic number.

215140030555243 is a deficient number, since it is larger than the sum of its proper divisors (7637621472149).

215140030555243 is a wasteful number, since it uses less digits than its factorization.

215140030555243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14603106.

The product of its (nonzero) digits is 360000, while the sum is 40.

Adding to 215140030555243 its reverse (342555030041512), we get a palindrome (557695060596755).

The spelling of 215140030555243 in words is "two hundred fifteen trillion, one hundred forty billion, thirty million, five hundred fifty-five thousand, two hundred forty-three".