21152530521298 has 8 divisors (see below), whose sum is σ = 34613231762160. Its totient is φ = 9614786600580.

The previous prime is 21152530521289. The next prime is 21152530521359. The reversal of 21152530521298 is 89212503525112.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480739330008 + ... + 480739330051.

It is an arithmetic number, because the mean of its divisors is an integer number (4326653970270).

Almost surely, 2^{21152530521298} is an apocalyptic number.

21152530521298 is a deficient number, since it is larger than the sum of its proper divisors (13460701240862).

21152530521298 is a wasteful number, since it uses less digits than its factorization.

21152530521298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961478660072.

The product of its (nonzero) digits is 432000, while the sum is 46.

The spelling of 21152530521298 in words is "twenty-one trillion, one hundred fifty-two billion, five hundred thirty million, five hundred twenty-one thousand, two hundred ninety-eight".