15530231369 has 2 divisors, whose sum is σ = 15530231370. Its totient is φ = 15530231368.

The previous prime is 15530231329. The next prime is 15530231393. The reversal of 15530231369 is 96313203551.

15530231369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12879526144 + 2650705225 = 113488^2 + 51485^2 .

It is an emirp because it is prime and its reverse (96313203551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15530231369 is a prime.

It is a super-2 number, since 2×15530231369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15530231329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7765115684 + 7765115685.

It is an arithmetic number, because the mean of its divisors is an integer number (7765115685).

Almost surely, 2^15530231369 is an apocalyptic number.

It is an amenable number.

15530231369 is a deficient number, since it is larger than the sum of its proper divisors (1).

15530231369 is an equidigital number, since it uses as much as digits as its factorization.

15530231369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 38.

The spelling of 15530231369 in words is "fifteen billion, five hundred thirty million, two hundred thirty-one thousand, three hundred sixty-nine".