21632550282 has 180 divisors, whose sum is σ = 59518696050. Its totient is φ = 5854651488.

The previous prime is 21632550271. The next prime is 21632550283. The reversal of 21632550282 is 28205523612.

It is a happy number.

21632550282 is a `hidden beast` number, since 2 + 1 + 6 + 325 + 50 + 282 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15200670681 + 6431879601 = 123291^2 + 80199^2 .

It is not an unprimeable number, because it can be changed into a prime (21632550283) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 2861844 + ... + 2869392.

Almost surely, 2^21632550282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21632550282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29759348025).

21632550282 is an abundant number, since it is smaller than the sum of its proper divisors (37886145768).

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

21632550282 is a wasteful number, since it uses less digits than its factorization.

21632550282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7615 (or 7580 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 21632550282 in words is "twenty-one billion, six hundred thirty-two million, five hundred fifty thousand, two hundred eighty-two".