21082698432 has 168 divisors, whose sum is σ = 60977928336. Its totient is φ = 6964199424.

The previous prime is 21082698431. The next prime is 21082698451. The reversal of 21082698432 is 23489628012.

21082698432 is a `hidden beast` number, since 2 + 108 + 26 + 98 + 432 = 666.

It is not an unprimeable number, because it can be changed into a prime (21082698431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60756883 + ... + 60757229.

Almost surely, 2^21082698432 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 21082698432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30488964168).

21082698432 is an abundant number, since it is smaller than the sum of its proper divisors (39895229904).

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

21082698432 is a wasteful number, since it uses less digits than its factorization.

21082698432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 21082698432 in words is "twenty-one billion, eighty-two million, six hundred ninety-eight thousand, four hundred thirty-two".