16218760107461 has 2 divisors, whose sum is σ = 16218760107462. Its totient is φ = 16218760107460.

The previous prime is 16218760107443. The next prime is 16218760107481. The reversal of 16218760107461 is 16470106781261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15263828541025 + 954931566436 = 3906895^2 + 977206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16218760107461 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 (16218760107421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8109380053730 + 8109380053731.

It is an arithmetic number, because the mean of its divisors is an integer number (8109380053731).

Almost surely, 2^{16218760107461} is an apocalyptic number.

It is an amenable number.

16218760107461 is a deficient number, since it is larger than the sum of its proper divisors (1).

16218760107461 is an equidigital number, since it uses as much as digits as its factorization.

16218760107461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 16218760107461 in words is "sixteen trillion, two hundred eighteen billion, seven hundred sixty million, one hundred seven thousand, four hundred sixty-one".