19000099089091 has 2 divisors, whose sum is σ = 19000099089092. Its totient is φ = 19000099089090.

The previous prime is 19000099089071. The next prime is 19000099089119. The reversal of 19000099089091 is 19098099000091.

It is a weak prime.

It is an emirp because it is prime and its reverse (19098099000091) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 16068066000061 and 16000066086061.

It is a cyclic number.

It is not a de Polignac number, because 19000099089091 - 2¹¹ = 19000099087043 is a prime.

It is a super-2 number, since 2×19000099089091² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19000099089071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9500049544545 + 9500049544546.

It is an arithmetic number, because the mean of its divisors is an integer number (9500049544546).

Almost surely, 2^{19000099089091} is an apocalyptic number.

19000099089091 is a deficient number, since it is larger than the sum of its proper divisors (1).

19000099089091 is an equidigital number, since it uses as much as digits as its factorization.

19000099089091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 55.

The spelling of 19000099089091 in words is "nineteen trillion, ninety-nine million, eighty-nine thousand, ninety-one".