21497496096 has 192 divisors, whose sum is σ = 60449227776. Its totient is φ = 6676992000.

The previous prime is 21497496071. The next prime is 21497496103. The reversal of 21497496096 is 69069479412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11120346 + ... + 11122278.

It is an arithmetic number, because the mean of its divisors is an integer number (314839728).

Almost surely, 2^21497496096 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 21497496096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30224613888).

21497496096 is an abundant number, since it is smaller than the sum of its proper divisors (38951731680).

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

21497496096 is a wasteful number, since it uses less digits than its factorization.

21497496096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115 (or 2107 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 21497496096 in words is "twenty-one billion, four hundred ninety-seven million, four hundred ninety-six thousand, ninety-six".