12191430087619 has 2 divisors, whose sum is σ = 12191430087620. Its totient is φ = 12191430087618.

The previous prime is 12191430087611. The next prime is 12191430087659. The reversal of 12191430087619 is 91678003419121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12191430087619 - 2³ = 12191430087611 is a prime.

It is a super-2 number, since 2×12191430087619² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12191430087611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6095715043809 + 6095715043810.

It is an arithmetic number, because the mean of its divisors is an integer number (6095715043810).

Almost surely, 2^{12191430087619} is an apocalyptic number.

12191430087619 is a deficient number, since it is larger than the sum of its proper divisors (1).

12191430087619 is an equidigital number, since it uses as much as digits as its factorization.

12191430087619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 12191430087619 in words is "twelve trillion, one hundred ninety-one billion, four hundred thirty million, eighty-seven thousand, six hundred nineteen".