21808848082 has 16 divisors (see below), whose sum is σ = 37615966272. Its totient is φ = 9289306800.

The previous prime is 21808848077. The next prime is 21808848097. The reversal of 21808848082 is 28084880812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4776169 + ... + 4780732.

It is an arithmetic number, because the mean of its divisors is an integer number (2350997892).

Almost surely, 2^21808848082 is an apocalyptic number.

21808848082 is a deficient number, since it is larger than the sum of its proper divisors (15807118190).

21808848082 is a wasteful number, since it uses less digits than its factorization.

21808848082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9557073.

The product of its (nonzero) digits is 524288, while the sum is 49.

The spelling of 21808848082 in words is "twenty-one billion, eight hundred eight million, eight hundred forty-eight thousand, eighty-two".