215223205345 has 8 divisors (see below), whose sum is σ = 263762907264. Its totient is φ = 168515190384.

The previous prime is 215223205339. The next prime is 215223205357. The reversal of 215223205345 is 543502322512.

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 215223205345 - 2¹¹ = 215223203297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215223205345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457921479 + ... + 457921948.

It is an arithmetic number, because the mean of its divisors is an integer number (32970363408).

Almost surely, 2^215223205345 is an apocalyptic number.

It is an amenable number.

215223205345 is a deficient number, since it is larger than the sum of its proper divisors (48539701919).

215223205345 is an equidigital number, since it uses as much as digits as its factorization.

215223205345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915843479.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 215223205345 its reverse (543502322512), we get a palindrome (758725527857).

The spelling of 215223205345 in words is "two hundred fifteen billion, two hundred twenty-three million, two hundred five thousand, three hundred forty-five".