16214215361081 has 2 divisors, whose sum is σ = 16214215361082. Its totient is φ = 16214215361080.

The previous prime is 16214215361041. The next prime is 16214215361159. The reversal of 16214215361081 is 18016351241261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12461316543481 + 3752898817600 = 3530059^2 + 1937240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16214215361081 is a prime.

It is a super-2 number, since 2×16214215361081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16214215361011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8107107680540 + 8107107680541.

It is an arithmetic number, because the mean of its divisors is an integer number (8107107680541).

Almost surely, 2^{16214215361081} is an apocalyptic number.

It is an amenable number.

16214215361081 is a deficient number, since it is larger than the sum of its proper divisors (1).

16214215361081 is an equidigital number, since it uses as much as digits as its factorization.

16214215361081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 16214215361081 in words is "sixteen trillion, two hundred fourteen billion, two hundred fifteen million, three hundred sixty-one thousand, eighty-one".