15220445243 has 2 divisors, whose sum is σ = 15220445244. Its totient is φ = 15220445242.

The previous prime is 15220445209. The next prime is 15220445269. The reversal of 15220445243 is 34254402251.

15220445243 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 is a cyclic number.

It is not a de Polignac number, because 15220445243 - 2⁶ = 15220445179 is a prime.

It is a super-2 number, since 2×15220445243² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15220445743) 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, 7610222621 + 7610222622.

It is an arithmetic number, because the mean of its divisors is an integer number (7610222622).

Almost surely, 2^15220445243 is an apocalyptic number.

15220445243 is a deficient number, since it is larger than the sum of its proper divisors (1).

15220445243 is an equidigital number, since it uses as much as digits as its factorization.

15220445243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 15220445243 its reverse (34254402251), we get a palindrome (49474847494).

The spelling of 15220445243 in words is "fifteen billion, two hundred twenty million, four hundred forty-five thousand, two hundred forty-three".