21260606065353 has 12 divisors (see below), whose sum is σ = 30709883346688. Its totient is φ = 14173682439960.

The previous prime is 21260606065301. The next prime is 21260606065373. The reversal of 21260606065353 is 35356060606212.

21260606065353 is a `hidden beast` number, since 2 + 1 + 2 + 6 + 0 + 6 + 0 + 606 + 5 + 35 + 3 = 666.

It is not a de Polignac number, because 21260606065353 - 2⁶ = 21260606065289 is a prime.

It is a super-2 number, since 2×21260606065353² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21260606065299 and 21260606065308.

It is not an unprimeable number, because it can be changed into a prime (21260606065373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2053825 + ... + 6836622.

Almost surely, 2^{21260606065353} is an apocalyptic number.

It is an amenable number.

21260606065353 is a deficient number, since it is larger than the sum of its proper divisors (9449277281335).

21260606065353 is a wasteful number, since it uses less digits than its factorization.

21260606065353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9156164 (or 9156161 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 21260606065353 in words is "twenty-one trillion, two hundred sixty billion, six hundred six million, sixty-five thousand, three hundred fifty-three".