16241317861 has 2 divisors, whose sum is σ = 16241317862. Its totient is φ = 16241317860.

The previous prime is 16241317783. The next prime is 16241317877. The reversal of 16241317861 is 16871314261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14138636836 + 2102681025 = 118906^2 + 45855^2 .

It is a cyclic number.

It is not a de Polignac number, because 16241317861 - 2¹⁷ = 16241186789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16241317061) 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, 8120658930 + 8120658931.

It is an arithmetic number, because the mean of its divisors is an integer number (8120658931).

Almost surely, 2^16241317861 is an apocalyptic number.

It is an amenable number.

16241317861 is a deficient number, since it is larger than the sum of its proper divisors (1).

16241317861 is an equidigital number, since it uses as much as digits as its factorization.

16241317861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The spelling of 16241317861 in words is "sixteen billion, two hundred forty-one million, three hundred seventeen thousand, eight hundred sixty-one".