215222352345 has 256 divisors, whose sum is σ = 524224512000. Its totient is φ = 82560280320.

The previous prime is 215222352343. The next prime is 215222352377. The reversal of 215222352345 is 543253222512.

It is a happy number.

215222352345 is a `hidden beast` number, since 21 + 52 + 2 + 23 + 523 + 45 = 666.

It is not a de Polignac number, because 215222352345 - 2¹ = 215222352343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215222352343) by changing a digit.

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 255 ways as a sum of consecutive naturals, for example, 6605364 + ... + 6637866.

It is an arithmetic number, because the mean of its divisors is an integer number (2047752000).

Almost surely, 2^215222352345 is an apocalyptic number.

It is an amenable number.

215222352345 is an abundant number, since it is smaller than the sum of its proper divisors (309002159655).

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

215222352345 is a wasteful number, since it uses less digits than its factorization.

215222352345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32562 (or 32542 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

Adding to 215222352345 its reverse (543253222512), we get a palindrome (758475574857).

The spelling of 215222352345 in words is "two hundred fifteen billion, two hundred twenty-two million, three hundred fifty-two thousand, three hundred forty-five".