10815844049 has 2 divisors, whose sum is σ = 10815844050. Its totient is φ = 10815844048.

The previous prime is 10815844021. The next prime is 10815844087. The reversal of 10815844049 is 94044851801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10807681600 + 8162449 = 103960^2 + 2857^2 .

It is a cyclic number.

It is not a de Polignac number, because 10815844049 - 2²⁸ = 10547408593 is a prime.

It is not a weakly prime, because it can be changed into another prime (10815804049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5407922024 + 5407922025.

It is an arithmetic number, because the mean of its divisors is an integer number (5407922025).

Almost surely, 2^10815844049 is an apocalyptic number.

It is an amenable number.

10815844049 is a deficient number, since it is larger than the sum of its proper divisors (1).

10815844049 is an equidigital number, since it uses as much as digits as its factorization.

10815844049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 10815844049 in words is "ten billion, eight hundred fifteen million, eight hundred forty-four thousand, forty-nine".