215135611206216 has 32 divisors (see below), whose sum is σ = 537876037008960. Its totient is φ = 71706935869632.

The previous prime is 215135611206199. The next prime is 215135611206223. The reversal of 215135611206216 is 612602116531512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308052220 + ... + 308749803.

It is an arithmetic number, because the mean of its divisors is an integer number (16808626156530).

Almost surely, 2^{215135611206216} is an apocalyptic number.

It is an amenable number.

215135611206216 is an abundant number, since it is smaller than the sum of its proper divisors (322740425802744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215135611206216 is a wasteful number, since it uses less digits than its factorization.

215135611206216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616816565 (or 616816561 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

Adding to 215135611206216 its reverse (612602116531512), we get a palindrome (827737727737728).

The spelling of 215135611206216 in words is "two hundred fifteen trillion, one hundred thirty-five billion, six hundred eleven million, two hundred six thousand, two hundred sixteen".