21453315287041 has 16 divisors (see below), whose sum is σ = 24424267023360. Its totient is φ = 18652687344720.

The previous prime is 21453315287021. The next prime is 21453315287093. The reversal of 21453315287041 is 14078251335412.

It is not a de Polignac number, because 21453315287041 - 2²⁹ = 21452778416129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21453315286982 and 21453315287000.

It is not an unprimeable number, because it can be changed into a prime (21453315287021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3387735 + ... + 7374508.

It is an arithmetic number, because the mean of its divisors is an integer number (1526516688960).

Almost surely, 2^{21453315287041} is an apocalyptic number.

It is an amenable number.

21453315287041 is a deficient number, since it is larger than the sum of its proper divisors (2970951736319).

21453315287041 is a wasteful number, since it uses less digits than its factorization.

21453315287041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10770156.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 21453315287041 in words is "twenty-one trillion, four hundred fifty-three billion, three hundred fifteen million, two hundred eighty-seven thousand, forty-one".