21135614315 has 8 divisors (see below), whose sum is σ = 25494151488. Its totient is φ = 16820881920.

The previous prime is 21135614261. The next prime is 21135614321. The reversal of 21135614315 is 51341653112.

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

It is not a de Polignac number, because 21135614315 - 2¹² = 21135610219 is a prime.

It is a Duffinian number.

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, 10950131 + ... + 10952060.

It is an arithmetic number, because the mean of its divisors is an integer number (3186768936).

Almost surely, 2^21135614315 is an apocalyptic number.

21135614315 is a deficient number, since it is larger than the sum of its proper divisors (4358537173).

21135614315 is a wasteful number, since it uses less digits than its factorization.

21135614315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21902389.

The product of its digits is 10800, while the sum is 32.

The spelling of 21135614315 in words is "twenty-one billion, one hundred thirty-five million, six hundred fourteen thousand, three hundred fifteen".