2116659888 has 480 divisors, whose sum is σ = 7644748800. Its totient is φ = 532998144.

The previous prime is 2116659871. The next prime is 2116659901. The reversal of 2116659888 is 8889566112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20550045 + ... + 20550147.

It is an arithmetic number, because the mean of its divisors is an integer number (15926560).

Almost surely, 2^2116659888 is an apocalyptic number.

2116659888 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 2116659888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3822374400).

2116659888 is an abundant number, since it is smaller than the sum of its proper divisors (5528088912).

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

2116659888 is a wasteful number, since it uses less digits than its factorization.

2116659888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 200 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The square root of 2116659888 is about 46007.1721365267. The cubic root of 2116659888 is about 1283.9566468607.

The spelling of 2116659888 in words is "two billion, one hundred sixteen million, six hundred fifty-nine thousand, eight hundred eighty-eight".