19001191020011 has 4 divisors (see below), whose sum is σ = 19012414406832. Its totient is φ = 18989967633192.

The previous prime is 19001191019971. The next prime is 19001191020029. The reversal of 19001191020011 is 11002019110091.

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 19001191020011 - 2¹⁰ = 19001191018987 is a prime.

It is a super-2 number, since 2×19001191020011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19001191020061) 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, 5611690871 + ... + 5611694256.

It is an arithmetic number, because the mean of its divisors is an integer number (4753103601708).

Almost surely, 2^{19001191020011} is an apocalyptic number.

19001191020011 is a deficient number, since it is larger than the sum of its proper divisors (11223386821).

19001191020011 is a wasteful number, since it uses less digits than its factorization.

19001191020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11223386820.

The product of its (nonzero) digits is 162, while the sum is 26.

The spelling of 19001191020011 in words is "nineteen trillion, one billion, one hundred ninety-one million, twenty thousand, eleven".