21344042096 has 160 divisors (see below), whose sum is σ = 48541268160. Its totient is φ = 9001746432.

The previous prime is 21344042077. The next prime is 21344042149. The reversal of 21344042096 is 69024044312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34818686 + ... + 34819298.

It is an arithmetic number, because the mean of its divisors is an integer number (303382926).

Almost surely, 2^21344042096 is an apocalyptic number.

21344042096 is a gapful number since it is divisible by the number (26) 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 21344042096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24270634080).

21344042096 is an abundant number, since it is smaller than the sum of its proper divisors (27197226064).

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

21344042096 is a wasteful number, since it uses less digits than its factorization.

21344042096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 21344042096 in words is "twenty-one billion, three hundred forty-four million, forty-two thousand, ninety-six".