2101684512 has 96 divisors (see below), whose sum is σ = 5701183488. Its totient is φ = 677488896.

The previous prime is 2101684499. The next prime is 2101684513. The reversal of 2101684512 is 2154861012.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 2101684512.

It is not an unprimeable number, because it can be changed into a prime (2101684513) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 422713 + ... + 427655.

It is an arithmetic number, because the mean of its divisors is an integer number (59387328).

Almost surely, 2^2101684512 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 2101684512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2850591744).

2101684512 is an abundant number, since it is smaller than the sum of its proper divisors (3599498976).

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

2101684512 is a wasteful number, since it uses less digits than its factorization.

2101684512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5102 (or 5094 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 2101684512 is about 45844.1327979928. The cubic root of 2101684512 is about 1280.9214783910.

The spelling of 2101684512 in words is "two billion, one hundred one million, six hundred eighty-four thousand, five hundred twelve".