21440055134353 has 8 divisors (see below), whose sum is σ = 21467927935872. Its totient is φ = 21412194113856.

The previous prime is 21440055134293. The next prime is 21440055134359. The reversal of 21440055134353 is 35343155004412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21440055134353 - 2¹⁷ = 21440055003281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21440055134359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699801 + ... + 6585577.

It is an arithmetic number, because the mean of its divisors is an integer number (2683490991984).

Almost surely, 2^{21440055134353} is an apocalyptic number.

It is an amenable number.

21440055134353 is a deficient number, since it is larger than the sum of its proper divisors (27872801519).

21440055134353 is an equidigital number, since it uses as much as digits as its factorization.

21440055134353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5890511.

The product of its (nonzero) digits is 432000, while the sum is 40.

The spelling of 21440055134353 in words is "twenty-one trillion, four hundred forty billion, fifty-five million, one hundred thirty-four thousand, three hundred fifty-three".