21414160623065 has 24 divisors (see below), whose sum is σ = 29901853980360. Its totient is φ = 14679361686528.

The previous prime is 21414160623061. The next prime is 21414160623071. The reversal of 21414160623065 is 56032606141412.

It can be written as a sum of positive squares in 4 ways, for example, as 8339435044864 + 13074725578201 = 2887808^2 + 3615899^2 .

It is not a de Polignac number, because 21414160623065 - 2² = 21414160623061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21414160623061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13014182 + ... + 14566991.

It is an arithmetic number, because the mean of its divisors is an integer number (1245910582515).

Almost surely, 2^{21414160623065} is an apocalyptic number.

It is an amenable number.

21414160623065 is a deficient number, since it is larger than the sum of its proper divisors (8487693357295).

21414160623065 is a wasteful number, since it uses less digits than its factorization.

21414160623065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27584361 (or 27584354 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

Adding to 21414160623065 its reverse (56032606141412), we get a palindrome (77446766764477).

The spelling of 21414160623065 in words is "twenty-one trillion, four hundred fourteen billion, one hundred sixty million, six hundred twenty-three thousand, sixty-five".