2101578708 has 12 divisors (see below), whose sum is σ = 4903683680. Its totient is φ = 700526232.

The previous prime is 2101578673. The next prime is 2101578763. The reversal of 2101578708 is 8078751012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 87565768 + ... + 87565791.

Almost surely, 2^2101578708 is an apocalyptic number.

It is an amenable number.

2101578708 is an abundant number, since it is smaller than the sum of its proper divisors (2802104972).

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

2101578708 is a wasteful number, since it uses less digits than its factorization.

2101578708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175131566 (or 175131564 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 39.

The square root of 2101578708 is about 45842.9788299146. The cubic root of 2101578708 is about 1280.8999831111.

The spelling of 2101578708 in words is "two billion, one hundred one million, five hundred seventy-eight thousand, seven hundred eight".