15220444243 has 4 divisors (see below), whose sum is σ = 15222810088. Its totient is φ = 15218078400.

The previous prime is 15220444237. The next prime is 15220444249. The reversal of 15220444243 is 34244402251.

15220444243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (15220444237) and next prime (15220444249).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15220444243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15220444249) 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 in 3 ways as a sum of consecutive naturals, for example, 1173246 + ... + 1186147.

It is an arithmetic number, because the mean of its divisors is an integer number (3805702522).

Almost surely, 2^15220444243 is an apocalyptic number.

15220444243 is a deficient number, since it is larger than the sum of its proper divisors (2365845).

15220444243 is an equidigital number, since it uses as much as digits as its factorization.

15220444243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365844.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 15220444243 its reverse (34244402251), we get a palindrome (49464846494).

The spelling of 15220444243 in words is "fifteen billion, two hundred twenty million, four hundred forty-four thousand, two hundred forty-three".