21652380082 has 8 divisors (see below), whose sum is σ = 32574946716. Its totient is φ = 10794064512.

The previous prime is 21652380073. The next prime is 21652380083. The reversal of 21652380082 is 28008325612.

It can be written as a sum of positive squares in 2 ways, for example, as 21100177081 + 552203001 = 145259^2 + 23499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21652380083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16061923 + ... + 16063270.

Almost surely, 2^21652380082 is an apocalyptic number.

21652380082 is a deficient number, since it is larger than the sum of its proper divisors (10922566634).

21652380082 is a wasteful number, since it uses less digits than its factorization.

21652380082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32125532.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 21652380082 in words is "twenty-one billion, six hundred fifty-two million, three hundred eighty thousand, eighty-two".