544121121461 has 2 divisors, whose sum is σ = 544121121462. Its totient is φ = 544121121460.

The previous prime is 544121121371. The next prime is 544121121463. The reversal of 544121121461 is 164121121445.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 379523763025 + 164597358436 = 616055^2 + 405706^2 .

It is a cyclic number.

It is not a de Polignac number, because 544121121461 - 2³⁸ = 269243214517 is a prime.

Together with 544121121463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544121121463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272060560730 + 272060560731.

It is an arithmetic number, because the mean of its divisors is an integer number (272060560731).

Almost surely, 2^544121121461 is an apocalyptic number.

It is an amenable number.

544121121461 is a deficient number, since it is larger than the sum of its proper divisors (1).

544121121461 is an equidigital number, since it uses as much as digits as its factorization.

544121121461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 32.

The spelling of 544121121461 in words is "five hundred forty-four billion, one hundred twenty-one million, one hundred twenty-one thousand, four hundred sixty-one".