21513530502141 has 8 divisors (see below), whose sum is σ = 28684857959520. Its totient is φ = 14342278356432.

The previous prime is 21513530502137. The next prime is 21513530502193. The reversal of 21513530502141 is 14120503531512.

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

It is not a de Polignac number, because 21513530502141 - 2² = 21513530502137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21513530502941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18157971 + ... + 19306448.

It is an arithmetic number, because the mean of its divisors is an integer number (3585607244940).

Almost surely, 2^{21513530502141} is an apocalyptic number.

It is an amenable number.

21513530502141 is a deficient number, since it is larger than the sum of its proper divisors (7171327457379).

21513530502141 is a wasteful number, since it uses less digits than its factorization.

21513530502141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37655835.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 21513530502141 in words is "twenty-one trillion, five hundred thirteen billion, five hundred thirty million, five hundred two thousand, one hundred forty-one".