21153002065315 has 8 divisors (see below), whose sum is σ = 25383629668320. Its totient is φ = 16922383525632.

The previous prime is 21153002065253. The next prime is 21153002065331. The reversal of 21153002065315 is 51356020035112.

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

It is a cyclic number.

It is not a de Polignac number, because 21153002065315 - 2¹⁹ = 21153001541027 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4968691 + ... + 8184979.

It is an arithmetic number, because the mean of its divisors is an integer number (3172953708540).

Almost surely, 2^{21153002065315} is an apocalyptic number.

21153002065315 is a deficient number, since it is larger than the sum of its proper divisors (4230627603005).

21153002065315 is a wasteful number, since it uses less digits than its factorization.

21153002065315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531661.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 21153002065315 in words is "twenty-one trillion, one hundred fifty-three billion, two million, sixty-five thousand, three hundred fifteen".