16091219087 has 2 divisors, whose sum is σ = 16091219088. Its totient is φ = 16091219086.

The previous prime is 16091219077. The next prime is 16091219143. The reversal of 16091219087 is 78091219061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16091219087 - 2⁸ = 16091218831 is a prime.

It is a super-2 number, since 2×16091219087² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16091219017) by changing a digit.

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 as a sum of consecutive naturals, namely, 8045609543 + 8045609544.

It is an arithmetic number, because the mean of its divisors is an integer number (8045609544).

Almost surely, 2^16091219087 is an apocalyptic number.

16091219087 is a deficient number, since it is larger than the sum of its proper divisors (1).

16091219087 is an equidigital number, since it uses as much as digits as its factorization.

16091219087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 44.

The spelling of 16091219087 in words is "sixteen billion, ninety-one million, two hundred nineteen thousand, eighty-seven".