2115210816 has 168 divisors, whose sum is σ = 6323990400. Its totient is φ = 675118080.

The previous prime is 2115210791. The next prime is 2115210821. The reversal of 2115210816 is 6180125112.

It is a super-2 number, since 2×2115210816² = 8948233592246771712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2115210816.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2321401 + ... + 2322311.

It is an arithmetic number, because the mean of its divisors is an integer number (37642800).

Almost surely, 2^2115210816 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 2115210816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3161995200).

2115210816 is an abundant number, since it is smaller than the sum of its proper divisors (4208779584).

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

2115210816 is a wasteful number, since it uses less digits than its factorization.

2115210816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 2115210816 is about 45991.4211130728. The cubic root of 2115210816 is about 1283.6635797227.

Adding to 2115210816 its reverse (6180125112), we get a palindrome (8295335928).

The spelling of 2115210816 in words is "two billion, one hundred fifteen million, two hundred ten thousand, eight hundred sixteen".