21242598336 has 168 divisors, whose sum is σ = 67273468704. Its totient is φ = 6374522880.

The previous prime is 21242598331. The next prime is 21242598341. The reversal of 21242598336 is 63389524212.

21242598336 is a `hidden beast` number, since 2 + 1 + 24 + 2 + 598 + 3 + 36 = 666.

It is an interprime number because it is at equal distance from previous prime (21242598331) and next prime (21242598341).

It is a junction number, because it is equal to n+sod(n) for n = 21242598291 and 21242598300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21242598331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178056 + ... + 272376.

Almost surely, 2^21242598336 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 21242598336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33636734352).

21242598336 is an abundant number, since it is smaller than the sum of its proper divisors (46030870368).

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

21242598336 is a wasteful number, since it uses less digits than its factorization.

21242598336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94379 (or 94366 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 21242598336 in words is "twenty-one billion, two hundred forty-two million, five hundred ninety-eight thousand, three hundred thirty-six".