215999364096 has 616 divisors, whose sum is σ = 692869051280. Its totient is φ = 67077144576.

The previous prime is 215999364071. The next prime is 215999364107. The reversal of 215999364096 is 690463999512.

215999364096 is a `hidden beast` number, since 2 + 1 + 599 + 9 + 36 + 4 + 0 + 9 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1375792050 + ... + 1375792206.

Almost surely, 2^215999364096 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 215999364096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346434525640).

215999364096 is an abundant number, since it is smaller than the sum of its proper divisors (476869687184).

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

215999364096 is an equidigital number, since it uses as much as digits as its factorization.

215999364096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 28343520, while the sum is 63.

The spelling of 215999364096 in words is "two hundred fifteen billion, nine hundred ninety-nine million, three hundred sixty-four thousand, ninety-six".