13815051241 has 4 divisors (see below), whose sum is σ = 14627701332. Its totient is φ = 13002401152.

The previous prime is 13815051227. The next prime is 13815051253. The reversal of 13815051241 is 14215051831.

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 12995088016 + 819963225 = 113996^2 + 28635^2 .

It is a cyclic number.

It is not a de Polignac number, because 13815051241 - 2⁵ = 13815051209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13815051941) 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, 406325020 + ... + 406325053.

It is an arithmetic number, because the mean of its divisors is an integer number (3656925333).

Almost surely, 2^13815051241 is an apocalyptic number.

It is an amenable number.

13815051241 is a deficient number, since it is larger than the sum of its proper divisors (812650091).

13815051241 is an equidigital number, since it uses as much as digits as its factorization.

13815051241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812650090.

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 13815051241 in words is "thirteen billion, eight hundred fifteen million, fifty-one thousand, two hundred forty-one".