15312215242241 has 4 divisors (see below), whose sum is σ = 15314262063684. Its totient is φ = 15310168420800.

The previous prime is 15312215242187. The next prime is 15312215242307. The reversal of 15312215242241 is 14224251221351.

15312215242241 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 can be written as a sum of positive squares in 2 ways, for example, as 13936192400641 + 1376022841600 = 3733121^2 + 1173040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15312215242241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15312215242741) 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, 1023399500 + ... + 1023414461.

It is an arithmetic number, because the mean of its divisors is an integer number (3828565515921).

Almost surely, 2^{15312215242241} is an apocalyptic number.

It is an amenable number.

15312215242241 is a deficient number, since it is larger than the sum of its proper divisors (2046821443).

15312215242241 is an equidigital number, since it uses as much as digits as its factorization.

15312215242241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046821442.

The product of its digits is 38400, while the sum is 35.

Adding to 15312215242241 its reverse (14224251221351), we get a palindrome (29536466463592).

The spelling of 15312215242241 in words is "fifteen trillion, three hundred twelve billion, two hundred fifteen million, two hundred forty-two thousand, two hundred forty-one".