21340540304103 has 8 divisors (see below), whose sum is σ = 28990922677488. Its totient is φ = 13958592400064.

The previous prime is 21340540304099. The next prime is 21340540304113. The reversal of 21340540304103 is 30140304504312.

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 21340540304103 - 2² = 21340540304099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21340540304113) 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, 67108617150 + ... + 67108617467.

It is an arithmetic number, because the mean of its divisors is an integer number (3623865334686).

Almost surely, 2^{21340540304103} is an apocalyptic number.

21340540304103 is a deficient number, since it is larger than the sum of its proper divisors (7650382373385).

21340540304103 is a wasteful number, since it uses less digits than its factorization.

21340540304103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134217234673.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 21340540304103 its reverse (30140304504312), we get a palindrome (51480844808415).

The spelling of 21340540304103 in words is "twenty-one trillion, three hundred forty billion, five hundred forty million, three hundred four thousand, one hundred three".