21282999696 has 480 divisors, whose sum is σ = 73862772480. Its totient is φ = 5745033216.

The previous prime is 21282999679. The next prime is 21282999697. The reversal of 21282999696 is 69699928212.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21282999697) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 219412320 + ... + 219412416.

It is an arithmetic number, because the mean of its divisors is an integer number (153880776).

Almost surely, 2^21282999696 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 21282999696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36931386240).

21282999696 is an abundant number, since it is smaller than the sum of its proper divisors (52579772784).

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

21282999696 is a wasteful number, since it uses less digits than its factorization.

21282999696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 199 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 63.

The spelling of 21282999696 in words is "twenty-one billion, two hundred eighty-two million, nine hundred ninety-nine thousand, six hundred ninety-six".