215347968528 has 320 divisors, whose sum is σ = 710858883072. Its totient is φ = 54558282240.

The previous prime is 215347968497. The next prime is 215347968541. The reversal of 215347968528 is 825869743512.

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 63 ways as a sum of consecutive naturals, for example, 25501875 + ... + 25510317.

Almost surely, 2^215347968528 is an apocalyptic number.

215347968528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215347968528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355429441536).

215347968528 is an abundant number, since it is smaller than the sum of its proper divisors (495510914544).

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

215347968528 is a wasteful number, since it uses less digits than its factorization.

215347968528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8642 (or 8636 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 60.

The spelling of 215347968528 in words is "two hundred fifteen billion, three hundred forty-seven million, nine hundred sixty-eight thousand, five hundred twenty-eight".