21443511342198 has 16 divisors (see below), whose sum is σ = 46785842928576. Its totient is φ = 6498033740040.

The previous prime is 21443511342167. The next prime is 21443511342251. The reversal of 21443511342198 is 89124311534412.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162450843436 + ... + 162450843567.

It is an arithmetic number, because the mean of its divisors is an integer number (2924115183036).

Almost surely, 2^{21443511342198} is an apocalyptic number.

21443511342198 is an abundant number, since it is smaller than the sum of its proper divisors (25342331586378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21443511342198 is a wasteful number, since it uses less digits than its factorization.

21443511342198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324901687019.

The product of its digits is 829440, while the sum is 48.

The spelling of 21443511342198 in words is "twenty-one trillion, four hundred forty-three billion, five hundred eleven million, three hundred forty-two thousand, one hundred ninety-eight".