215216074416 has 400 divisors, whose sum is σ = 665194924800. Its totient is φ = 59942131200.

The previous prime is 215216074379. The next prime is 215216074429. The reversal of 215216074416 is 614470612512.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1425271941 + ... + 1425272091.

It is an arithmetic number, because the mean of its divisors is an integer number (1662987312).

Almost surely, 2^215216074416 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 215216074416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332597462400).

215216074416 is an abundant number, since it is smaller than the sum of its proper divisors (449978850384).

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

215216074416 is a wasteful number, since it uses less digits than its factorization.

215216074416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

Adding to 215216074416 its reverse (614470612512), we get a palindrome (829686686928).

The spelling of 215216074416 in words is "two hundred fifteen billion, two hundred sixteen million, seventy-four thousand, four hundred sixteen".