19018443448011 has 24 divisors (see below), whose sum is σ = 30515166130320. Its totient is φ = 10492934313792.

The previous prime is 19018443447967. The next prime is 19018443448111. The reversal of 19018443448011 is 11084434481091.

It is not a de Polignac number, because 19018443448011 - 2¹⁰ = 19018443446987 is a prime.

It is a super-2 number, since 2×19018443448011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19018443448111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2230636536 + ... + 2230645061.

It is an arithmetic number, because the mean of its divisors is an integer number (1271465255430).

Almost surely, 2^{19018443448011} is an apocalyptic number.

19018443448011 is a deficient number, since it is larger than the sum of its proper divisors (11496722682309).

19018443448011 is a wasteful number, since it uses less digits than its factorization.

19018443448011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461281643 (or 4461281636 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 19018443448011 in words is "nineteen trillion, eighteen billion, four hundred forty-three million, four hundred forty-eight thousand, eleven".