15530450191 has 2 divisors, whose sum is σ = 15530450192. Its totient is φ = 15530450190.

The previous prime is 15530450129. The next prime is 15530450203. The reversal of 15530450191 is 19105403551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15530450191 - 2⁷ = 15530450063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15530450491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7765225095 + 7765225096.

It is an arithmetic number, because the mean of its divisors is an integer number (7765225096).

Almost surely, 2^15530450191 is an apocalyptic number.

15530450191 is a deficient number, since it is larger than the sum of its proper divisors (1).

15530450191 is an equidigital number, since it uses as much as digits as its factorization.

15530450191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 34.

The spelling of 15530450191 in words is "fifteen billion, five hundred thirty million, four hundred fifty thousand, one hundred ninety-one".