215850847968 has 288 divisors, whose sum is σ = 746652344256. Its totient is φ = 57741410304.

The previous prime is 215850847967. The next prime is 215850847973. The reversal of 215850847968 is 869748058512.

215850847968 is a `hidden beast` number, since 2 + 1 + 58 + 50 + 8 + 479 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215850847967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6598180 + ... + 6630812.

It is an arithmetic number, because the mean of its divisors is an integer number (2592542862).

Almost surely, 2^215850847968 is an apocalyptic number.

215850847968 is a gapful number since it is divisible by the number (28) 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 215850847968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373326172128).

215850847968 is an abundant number, since it is smaller than the sum of its proper divisors (530801496288).

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

215850847968 is a wasteful number, since it uses less digits than its factorization.

215850847968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32866 (or 32855 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 63.

The spelling of 215850847968 in words is "two hundred fifteen billion, eight hundred fifty million, eight hundred forty-seven thousand, nine hundred sixty-eight".