21300992160 has 192 divisors, whose sum is σ = 76901529600. Its totient is φ = 4854961152.

The previous prime is 21300992099. The next prime is 21300992161. The reversal of 21300992160 is 6129900312.

It is not an unprimeable number, because it can be changed into a prime (21300992161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1197411 + ... + 1215069.

It is an arithmetic number, because the mean of its divisors is an integer number (400528800).

Almost surely, 2^21300992160 is an apocalyptic number.

21300992160 is a gapful number since it is divisible by the number (20) 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 21300992160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38450764800).

21300992160 is an abundant number, since it is smaller than the sum of its proper divisors (55600537440).

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

21300992160 is a wasteful number, since it uses less digits than its factorization.

21300992160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18043 (or 18035 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The spelling of 21300992160 in words is "twenty-one billion, three hundred million, nine hundred ninety-two thousand, one hundred sixty".