215163340655 has 8 divisors (see below), whose sum is σ = 258198510192. Its totient is φ = 172129004928.

The previous prime is 215163340607. The next prime is 215163340661. The reversal of 215163340655 is 556043361512.

215163340655 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 a cyclic number.

It is not a de Polignac number, because 215163340655 - 2²² = 215159146351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 825479 + ... + 1054391.

It is an arithmetic number, because the mean of its divisors is an integer number (32274813774).

Almost surely, 2^215163340655 is an apocalyptic number.

215163340655 is a deficient number, since it is larger than the sum of its proper divisors (43035169537).

215163340655 is a wasteful number, since it uses less digits than its factorization.

215163340655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416905.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 215163340655 in words is "two hundred fifteen billion, one hundred sixty-three million, three hundred forty thousand, six hundred fifty-five".