15205042241 has 4 divisors (see below), whose sum is σ = 15284649984. Its totient is φ = 15125434500.

The previous prime is 15205042169. The next prime is 15205042253. The reversal of 15205042241 is 14224050251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14224050251 = 79 ⋅180051269.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15205042241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15205042241.

It is not an unprimeable number, because it can be changed into a prime (15205042291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39803585 + ... + 39803966.

It is an arithmetic number, because the mean of its divisors is an integer number (3821162496).

Almost surely, 2^15205042241 is an apocalyptic number.

It is an amenable number.

15205042241 is a deficient number, since it is larger than the sum of its proper divisors (79607743).

15205042241 is an equidigital number, since it uses as much as digits as its factorization.

15205042241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79607742.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 15205042241 its reverse (14224050251), we get a palindrome (29429092492).

The spelling of 15205042241 in words is "fifteen billion, two hundred five million, forty-two thousand, two hundred forty-one".