215230007652240 has 320 divisors, whose sum is σ = 779032095897600. Its totient is φ = 49135928163840.

The previous prime is 215230007652239. The next prime is 215230007652263. The reversal of 215230007652240 is 42256700032512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66497895 + ... + 69659385.

It is an arithmetic number, because the mean of its divisors is an integer number (2434475299680).

Almost surely, 2^{215230007652240} is an apocalyptic number.

215230007652240 is a gapful number since it is divisible by the number (20) 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 215230007652240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389516047948800).

215230007652240 is an abundant number, since it is smaller than the sum of its proper divisors (563802088245360).

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

215230007652240 is a wasteful number, since it uses less digits than its factorization.

215230007652240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162355 (or 3162335 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

Adding to 215230007652240 its reverse (42256700032512), we get a palindrome (257486707684752).

The spelling of 215230007652240 in words is "two hundred fifteen trillion, two hundred thirty billion, seven million, six hundred fifty-two thousand, two hundred forty".