21406458613411 has 4 divisors (see below), whose sum is σ = 21606518974392. Its totient is φ = 21206398252432.

The previous prime is 21406458613373. The next prime is 21406458613417. The reversal of 21406458613411 is 11431685460412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21406458613411 - 2⁷ = 21406458613283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21406458613417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100030180330 + ... + 100030180543.

It is an arithmetic number, because the mean of its divisors is an integer number (5401629743598).

Almost surely, 2^{21406458613411} is an apocalyptic number.

21406458613411 is a deficient number, since it is larger than the sum of its proper divisors (200060360981).

21406458613411 is a wasteful number, since it uses less digits than its factorization.

21406458613411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200060360980.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 21406458613411 in words is "twenty-one trillion, four hundred six billion, four hundred fifty-eight million, six hundred thirteen thousand, four hundred eleven".