215315210455 has 16 divisors (see below), whose sum is σ = 273587860224. Its totient is φ = 162113236480.

The previous prime is 215315210351. The next prime is 215315210471. The reversal of 215315210455 is 554012513512.

It is not a de Polignac number, because 215315210455 - 2¹⁷ = 215315079383 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 215315210455.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4028889 + ... + 4081981.

It is an arithmetic number, because the mean of its divisors is an integer number (17099241264).

Almost surely, 2^215315210455 is an apocalyptic number.

215315210455 is a deficient number, since it is larger than the sum of its proper divisors (58272649769).

215315210455 is a wasteful number, since it uses less digits than its factorization.

215315210455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100826.

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 215315210455 its reverse (554012513512), we get a palindrome (769327723967).

The spelling of 215315210455 in words is "two hundred fifteen billion, three hundred fifteen million, two hundred ten thousand, four hundred fifty-five".