215216199396 has 315 divisors, whose sum is σ = 630020562115. Its totient is φ = 64298480400.

The previous prime is 215216199379. The next prime is 215216199409. The reversal of 215216199396 is 693991612512.

The square root of 215216199396 is 463914.

It is a perfect power (a square), and thus also a powerful number.

215216199396 is a `hidden beast` number, since 2 + 1 + 5 + 2 + 161 + 99 + 396 = 666.

215216199396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

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 104 ways as a sum of consecutive naturals, for example, 3031214041 + ... + 3031214111.

Almost surely, 2^215216199396 is an apocalyptic number.

215216199396 is the 463914-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215216199396

215216199396 is an abundant number, since it is smaller than the sum of its proper divisors (414804362719).

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

215216199396 is an frugal number, since it uses more digits than its factorization.

215216199396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 87 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The spelling of 215216199396 in words is "two hundred fifteen billion, two hundred sixteen million, one hundred ninety-nine thousand, three hundred ninety-six".