53844044861 has 2 divisors, whose sum is σ = 53844044862. Its totient is φ = 53844044860.

The previous prime is 53844044809. The next prime is 53844044873. The reversal of 53844044861 is 16844044835.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50039005636 + 3805039225 = 223694^2 + 61685^2 .

It is a cyclic number.

It is not a de Polignac number, because 53844044861 - 2⁶ = 53844044797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53844044161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26922022430 + 26922022431.

It is an arithmetic number, because the mean of its divisors is an integer number (26922022431).

Almost surely, 2^53844044861 is an apocalyptic number.

It is an amenable number.

53844044861 is a deficient number, since it is larger than the sum of its proper divisors (1).

53844044861 is an equidigital number, since it uses as much as digits as its factorization.

53844044861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1474560, while the sum is 47.

The spelling of 53844044861 in words is "fifty-three billion, eight hundred forty-four million, forty-four thousand, eight hundred sixty-one".