21446255144011 has 4 divisors (see below), whose sum is σ = 21446441717400. Its totient is φ = 21446068570624.

The previous prime is 21446255143997. The next prime is 21446255144057. The reversal of 21446255144011 is 11044155264412.

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 21446255144011 - 2¹⁷ = 21446255012939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21446255145011) 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, 93114166 + ... + 93344203.

It is an arithmetic number, because the mean of its divisors is an integer number (5361610429350).

Almost surely, 2^{21446255144011} is an apocalyptic number.

21446255144011 is a deficient number, since it is larger than the sum of its proper divisors (186573389).

21446255144011 is a wasteful number, since it uses less digits than its factorization.

21446255144011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186573388.

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 21446255144011 in words is "twenty-one trillion, four hundred forty-six billion, two hundred fifty-five million, one hundred forty-four thousand, eleven".