21282395706 has 320 divisors, whose sum is σ = 58837363200. Its totient is φ = 5660928000.

The previous prime is 21282395681. The next prime is 21282395711. The reversal of 21282395706 is 60759328212.

21282395706 is a `hidden beast` number, since 21 + 28 + 2 + 39 + 570 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 53073106 + ... + 53073506.

It is an arithmetic number, because the mean of its divisors is an integer number (183866760).

Almost surely, 2^21282395706 is an apocalyptic number.

21282395706 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21282395706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29418681600).

21282395706 is an abundant number, since it is smaller than the sum of its proper divisors (37554967494).

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

21282395706 is a wasteful number, since it uses less digits than its factorization.

21282395706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 21282395706 in words is "twenty-one billion, two hundred eighty-two million, three hundred ninety-five thousand, seven hundred six".