215231344848 has 480 divisors, whose sum is σ = 733543050240. Its totient is φ = 58231111680.

The previous prime is 215231344847. The next prime is 215231344897. The reversal of 215231344848 is 848443132512.

215231344848 is a `hidden beast` number, since 2 + 1 + 523 + 1 + 3 + 44 + 84 + 8 = 666.

It is a super-2 number, since 2×215231344848² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215231344843) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28606015 + ... + 28613537.

It is an arithmetic number, because the mean of its divisors is an integer number (1528214688).

Almost surely, 2^215231344848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215231344848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366771525120).

215231344848 is an abundant number, since it is smaller than the sum of its proper divisors (518311705392).

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

215231344848 is a wasteful number, since it uses less digits than its factorization.

215231344848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7627 (or 7618 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The spelling of 215231344848 in words is "two hundred fifteen billion, two hundred thirty-one million, three hundred forty-four thousand, eight hundred forty-eight".