215440912795 has 4 divisors (see below), whose sum is σ = 258529095360. Its totient is φ = 172352730232.

The previous prime is 215440912789. The next prime is 215440912811. The reversal of 215440912795 is 597219044512.

215440912795 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 215440912795 - 2³ = 215440912787 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 21544091275 + ... + 21544091284.

It is an arithmetic number, because the mean of its divisors is an integer number (64632273840).

Almost surely, 2^215440912795 is an apocalyptic number.

215440912795 is a deficient number, since it is larger than the sum of its proper divisors (43088182565).

215440912795 is an equidigital number, since it uses as much as digits as its factorization.

215440912795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43088182564.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 215440912795 in words is "two hundred fifteen billion, four hundred forty million, nine hundred twelve thousand, seven hundred ninety-five".