21355405141041 has 6 divisors (see below), whose sum is σ = 30846696314850. Its totient is φ = 14236936760688.

The previous prime is 21355405141013. The next prime is 21355405141043. The reversal of 21355405141041 is 14014150455312.

21355405141041 is a `hidden beast` number, since 2 + 1 + 3 + 5 + 540 + 5 + 1 + 4 + 104 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12784943964816 + 8570461176225 = 3575604^2 + 2927535^2 .

It is not a de Polignac number, because 21355405141041 - 2¹⁵ = 21355405108273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21355405140987 and 21355405141005.

It is not an unprimeable number, because it can be changed into a prime (21355405141043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1186411396716 + ... + 1186411396733.

It is an arithmetic number, because the mean of its divisors is an integer number (5141116052475).

Almost surely, 2^{21355405141041} is an apocalyptic number.

It is an amenable number.

21355405141041 is a deficient number, since it is larger than the sum of its proper divisors (9491291173809).

21355405141041 is a wasteful number, since it uses less digits than its factorization.

21355405141041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372822793455 (or 2372822793452 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 21355405141041 its reverse (14014150455312), we get a palindrome (35369555596353).

The spelling of 21355405141041 in words is "twenty-one trillion, three hundred fifty-five billion, four hundred five million, one hundred forty-one thousand, forty-one".