215986848880 has 180 divisors, whose sum is σ = 577027208520. Its totient is φ = 75124079360.

The previous prime is 215986848871. The next prime is 215986848881. The reversal of 215986848880 is 88848689512.

It is a super-2 number, since 2×215986848880² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215986848881) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5099631 + ... + 5141809.

It is an arithmetic number, because the mean of its divisors is an integer number (3205706714).

Almost surely, 2^215986848880 is an apocalyptic number.

215986848880 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 215986848880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288513604260).

215986848880 is an abundant number, since it is smaller than the sum of its proper divisors (361040359640).

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

215986848880 is a wasteful number, since it uses less digits than its factorization.

215986848880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42260 (or 42220 counting only the distinct ones).

The product of its (nonzero) digits is 70778880, while the sum is 67.

The spelling of 215986848880 in words is "two hundred fifteen billion, nine hundred eighty-six million, eight hundred forty-eight thousand, eight hundred eighty".