21067552082 has 8 divisors (see below), whose sum is σ = 31880986236. Its totient is φ = 10440556672.

The previous prime is 21067552081. The next prime is 21067552109. The reversal of 21067552082 is 28025576012.

It can be written as a sum of positive squares in 2 ways, for example, as 21060104641 + 7447441 = 145121^2 + 2729^2 .

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 (21067552081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46609403 + ... + 46609854.

Almost surely, 2^21067552082 is an apocalyptic number.

21067552082 is a deficient number, since it is larger than the sum of its proper divisors (10813434154).

21067552082 is a wasteful number, since it uses less digits than its factorization.

21067552082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93219372.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 21067552082 in words is "twenty-one billion, sixty-seven million, five hundred fifty-two thousand, eighty-two".