21530541134302 has 8 divisors (see below), whose sum is σ = 32300677746936. Its totient is φ = 10763648551992.

The previous prime is 21530541134293. The next prime is 21530541134321. The reversal of 21530541134302 is 20343114503512.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810990988 + ... + 811017535.

It is an arithmetic number, because the mean of its divisors is an integer number (4037584718367).

Almost surely, 2^{21530541134302} is an apocalyptic number.

21530541134302 is a deficient number, since it is larger than the sum of its proper divisors (10770136612634).

21530541134302 is a wasteful number, since it uses less digits than its factorization.

21530541134302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622015162.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 21530541134302 its reverse (20343114503512), we get a palindrome (41873655637814).

The spelling of 21530541134302 in words is "twenty-one trillion, five hundred thirty billion, five hundred forty-one million, one hundred thirty-four thousand, three hundred two".