215005232442 has 128 divisors (see below), whose sum is σ = 577943009280. Its totient is φ = 51497360640.

The previous prime is 215005232389. The next prime is 215005232467. The reversal of 215005232442 is 244232500512.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6066409 + ... + 6101747.

It is an arithmetic number, because the mean of its divisors is an integer number (4515179760).

Almost surely, 2^215005232442 is an apocalyptic number.

215005232442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 215005232442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288971504640).

215005232442 is an abundant number, since it is smaller than the sum of its proper divisors (362937776838).

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

215005232442 is a wasteful number, since it uses less digits than its factorization.

215005232442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36388.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 215005232442 its reverse (244232500512), we get a palindrome (459237732954).

The spelling of 215005232442 in words is "two hundred fifteen billion, five million, two hundred thirty-two thousand, four hundred forty-two".