10718784163121 has 2 divisors, whose sum is σ = 10718784163122. Its totient is φ = 10718784163120.

The previous prime is 10718784163099. The next prime is 10718784163123. The reversal of 10718784163121 is 12136148781701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9265698569521 + 1453085593600 = 3043961^2 + 1205440^2 .

It is a cyclic number.

It is not a de Polignac number, because 10718784163121 - 2³⁴ = 10701604293937 is a prime.

It is a super-2 number, since 2×10718784163121² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 10718784163123, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10718784163121.

It is not a weakly prime, because it can be changed into another prime (10718784163123) 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, 5359392081560 + 5359392081561.

It is an arithmetic number, because the mean of its divisors is an integer number (5359392081561).

Almost surely, 2^{10718784163121} is an apocalyptic number.

It is an amenable number.

10718784163121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10718784163121 is an equidigital number, since it uses as much as digits as its factorization.

10718784163121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 50.

The spelling of 10718784163121 in words is "ten trillion, seven hundred eighteen billion, seven hundred eighty-four million, one hundred sixty-three thousand, one hundred twenty-one".