15115420241 has 4 divisors (see below), whose sum is σ = 15115676400. Its totient is φ = 15115164084.

The previous prime is 15115420181. The next prime is 15115420247. The reversal of 15115420241 is 14202451151.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15115420241 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 15115420241.

It is not an unprimeable number, because it can be changed into a prime (15115420247) 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, 10190 + ... + 174168.

It is an arithmetic number, because the mean of its divisors is an integer number (3778919100).

Almost surely, 2^15115420241 is an apocalyptic number.

It is an amenable number.

15115420241 is a deficient number, since it is larger than the sum of its proper divisors (256159).

15115420241 is an equidigital number, since it uses as much as digits as its factorization.

15115420241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256158.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 15115420241 its reverse (14202451151), we get a palindrome (29317871392).

The spelling of 15115420241 in words is "fifteen billion, one hundred fifteen million, four hundred twenty thousand, two hundred forty-one".