21095832192 has 128 divisors (see below), whose sum is σ = 56505470400. Its totient is φ = 6973317120.

The previous prime is 21095832161. The next prime is 21095832209. The reversal of 21095832192 is 29123859012.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34190668 + ... + 34191284.

Almost surely, 2^21095832192 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 21095832192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28252735200).

21095832192 is an abundant number, since it is smaller than the sum of its proper divisors (35409638208).

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

21095832192 is a wasteful number, since it uses less digits than its factorization.

21095832192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 21095832192 in words is "twenty-one billion, ninety-five million, eight hundred thirty-two thousand, one hundred ninety-two".