21008029482 has 64 divisors (see below), whose sum is σ = 50992675200. Its totient is φ = 6358055040.

The previous prime is 21008029451. The next prime is 21008029499. The reversal of 21008029482 is 28492080012.

21008029482 is a `hidden beast` number, since 210 + 0 + 80 + 294 + 82 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 458688 + ... + 502404.

It is an arithmetic number, because the mean of its divisors is an integer number (796760550).

Almost surely, 2^21008029482 is an apocalyptic number.

21008029482 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21008029482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25496337600).

21008029482 is an abundant number, since it is smaller than the sum of its proper divisors (29984645718).

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

21008029482 is a wasteful number, since it uses less digits than its factorization.

21008029482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44548 (or 44542 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 21008029482 in words is "twenty-one billion, eight million, twenty-nine thousand, four hundred eighty-two".