21040410341 has 4 divisors (see below), whose sum is σ = 21156655884. Its totient is φ = 20924164800.

The previous prime is 21040410319. The next prime is 21040410371. The reversal of 21040410341 is 14301404012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4587217441 + 16453192900 = 67729^2 + 128270^2 .

It is a cyclic number.

It is not a de Polignac number, because 21040410341 - 2¹⁰ = 21040409317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21040410301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58122500 + ... + 58122861.

It is an arithmetic number, because the mean of its divisors is an integer number (5289163971).

Almost surely, 2^21040410341 is an apocalyptic number.

It is an amenable number.

21040410341 is a deficient number, since it is larger than the sum of its proper divisors (116245543).

21040410341 is a wasteful number, since it uses less digits than its factorization.

21040410341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116245542.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21040410341 its reverse (14301404012), we get a palindrome (35341814353).

The spelling of 21040410341 in words is "twenty-one billion, forty million, four hundred ten thousand, three hundred forty-one".